Corteva (CTVA) 10-Q 5 Nov 20 2020 Q3 Quarterly report Financial data

DEI Document

DEI Document - $ / shares	9 Months Ended
	Sep. 30, 2020	Oct. 29, 2020	Dec. 31, 2019	Sep. 30, 2019
Document Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2020
Amendment Flag	false
Document Transition Report	false
Entity File Number	001-38710
Entity Registrant Name	Corteva, Inc.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	82-4979096
Entity Address, Address Line One	974 Centre Road,
Entity Address, City or Town	Wilmington,
Entity Address, State or Province	DE
Entity Address, Postal Zip Code	19805
City Area Code	(302)
Local Phone Number	485-3000
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		745,016,000
Common Stock, Par Value	$ 0.01	$ 0.01	$ 0.01	$ 0.01
Entity Central Index Key	0001755672
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q3
Entity Small Business	false
Common Stock [Member]
Document Information [Line Items]
Title of 12(b) Security	Common Stock, par value $0.01 per share
Trading Symbol	CTVA
Security Exchange Name	NYSE
EID [Member]
Document Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2020
Amendment Flag	false
Document Transition Report	false
Entity File Number	1-815
Entity Registrant Name	E. I. du Pont de Nemours and Company
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	51-0014090
Entity Address, Address Line One	974 Centre Road,
Entity Address, City or Town	Wilmington,
Entity Address, State or Province	DE
Entity Address, Postal Zip Code	19805
City Area Code	(302)
Local Phone Number	485-3000
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		200
Common Stock, Par Value	$ 0.30	$ 0.30	$ 0.30	$ 0.30
Entity Central Index Key	0000030554
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q3
Entity Small Business	false
EID [Member] | $3.50 Series Preferred Stock [Member]
Document Information [Line Items]
Title of 12(b) Security	$3.50 Series Preferred Stock
Trading Symbol	CTAPrA
Security Exchange Name	NYSE
EID [Member] | $4.50 Series Preferred Stock [Member]
Document Information [Line Items]
Title of 12(b) Security	$4.50 Series Preferred Stock
Trading Symbol	CTAPrB
Security Exchange Name	NYSE

Consolidated Statements of Oper

Consolidated Statements of Operations - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Net Sales	$ 1,863	$ 1,911	$ 11,010	$ 10,863
Cost of Goods Sold	1,297	1,349	6,395	6,607
Research and Development Expense	284	289	837	857
Selling, General and Administrative Expenses	597	646	2,319	2,318
Amortization of Intangibles	162	100	501	314
Restructuring and Asset related charges, net	49	46	298	167
Integration and Separation Costs	0	152	0	694
Other income - net	30	59	120	90
Loss on Early Extinguishment of Debt	0	0	0	13	[1]
Interest Expense	11	19	35	112
(Loss) income from continuing operations before income taxes	(507)	(631)	745	(129)
(Benefit from) provision for income taxes on continuing operations	(117)	(104)	88	99
(Loss) income from continuing operations after income taxes	(390)	(527)	657	(228)
Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest	0	22	1	(695)
Net (loss) income	(390)	(505)	658	(923)	[1]
Net income (loss) attributable to noncontrolling interests	2	(11)	18	15
Net (loss) income attributable to Corteva	$ (392)	$ (494)	$ 640	$ (938)
Basic (loss) earnings per share of common stock from continuing operations	$ (0.52)	$ (0.69)	$ 0.85	$ (0.32)
Basic earnings (loss) per share of common stock from discontinued operations	0	0.03	0	(0.93)
Basic (loss) earnings per share of common stock	(0.52)	(0.66)	0.85	(1.25)
Diluted (loss) earnings per share of common stock from continuing operations	(0.52)	(0.69)	0.85	(0.32)
Diluted earnings (loss) per share of common stock from discontinued operations	0	0.03	0	(0.93)
Diluted (loss) earnings per share of common stock	$ (0.52)	$ (0.66)	$ 0.85	$ (1.25)
EID [Member]
Net Sales	$ 1,863	$ 1,911	$ 11,010	$ 10,863
Cost of Goods Sold	1,297	1,349	6,395	6,607
Research and Development Expense	284	289	837	857
Selling, General and Administrative Expenses	597	646	2,319	2,318
Amortization of Intangibles	162	100	501	314
Restructuring and Asset related charges, net	49	46	298	167
Integration and Separation Costs	0	152	0	694
Other income - net	30	59	120	90
Loss on Early Extinguishment of Debt	0	0	0	13	[2]
Interest Expense	30	58	117	181
(Loss) income from continuing operations before income taxes	(526)	(670)	663	(198)
(Benefit from) provision for income taxes on continuing operations	(122)	(113)	68	83
(Loss) income from Continuing Operations After Taxes	(404)	(557)	595	(281)
Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest	0	22	1	(695)
Net (loss) income	(404)	(535)	596	(976)	[2]
Net income (loss) attributable to noncontrolling interests	0	(11)	11	8
Net (loss) income attributable to Corteva	$ (404)	$ (524)	$ 585	$ (984)
[1]	The cash flows for the nine months ended September 30, 2019 includes cash flows of EID's ECP and Specialty Products Entities.
[2]	The cash flows for the nine months ended September 30, 2019 includes cash flows of EID's ECP and Specialty Products Entities.

Consolidated Statements of Comp

Consolidated Statements of Comprehensive (Loss) Income - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Net (loss) income	$ (390)	$ (505)	$ 658	$ (923)	[1]
Cumulative Translation Adjustments	68	(297)	(507)	(471)
Derivatives Instruments	(20)	0	(16)	23
Total other comprehensive income (loss)	49	(292)	(526)	(521)
Comprehensive (loss) income	(341)	(797)	132	(1,444)
Comprehensive Income (loss) Attributable to Noncontrolling Interest - Net of Tax	2	(11)	18	15
Comprehensive (Loss) Income Attributable to Corteva	(343)	(786)	114	(1,459)
Pension Plan
Adjustments to other benefit plans	0	5	(6)	13
Other Benefit Plans
Adjustments to other benefit plans	1	0	3	(86)
EID [Member]
Net (loss) income	(404)	(535)	596	(976)	[2]
Cumulative Translation Adjustments	68	(297)	(507)	(471)
Derivatives Instruments	(20)	0	(16)	23
Total other comprehensive income (loss)	49	(292)	(526)	(521)
Comprehensive (loss) income	(355)	(827)	70	(1,497)
Comprehensive Income (loss) Attributable to Noncontrolling Interest - Net of Tax	0	(11)	11	8
Comprehensive (Loss) Income Attributable to Corteva	(355)	(816)	59	(1,505)
EID [Member] | Pension Plan
Adjustments to other benefit plans	0	5	(6)	13
EID [Member] | Other Benefit Plans
Adjustments to other benefit plans	$ 1	$ 0	$ 3	$ (86)
[1]	The cash flows for the nine months ended September 30, 2019 includes cash flows of EID's ECP and Specialty Products Entities.
[2]	The cash flows for the nine months ended September 30, 2019 includes cash flows of EID's ECP and Specialty Products Entities.

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019	Sep. 30, 2019
Cash and cash equivalents	$ 2,768	$ 1,764	$ 1,980
Marketable Securities	152	5	117
Accounts and notes receivable - net	5,627	5,528	6,574
Inventories	4,374	5,032	4,403
Other current assets	1,167	1,190	1,043
Total current assets	14,088	13,519	14,117
Investments in nonconsolidated affiliates	62	66	70
Property, plant and equipment - net of accumulated depreciation (September 30, 2020 - $3,712; December 31, 2019 - $3,326; September 30, 2019 - $3,186)	4,273	4,546	4,503
Goodwill	10,110	10,229	10,168
Other intangible assets	10,914	11,424	11,667
Deferred Income Taxes	289	287	270
Other assets	1,954	2,326	2,440
Total Assets	41,690	42,397	43,235
Short-term borrowings and finance lease obligations	2,142	7	3,604
Accounts payable	2,994	3,702	3,014
Income Taxes Payable	168	95	126
Accrued and other current liabilities	2,430	4,434	2,249
Total current liabilities	7,734	8,238	8,993
Long-term Debt	1,102	115	116
Deferred income tax liabilities	740	920	1,328
Pension and other post employment benefits - noncurrent	5,904	6,377	5,405
Other noncurrent obligations	1,864	2,192	2,132
Total noncurrent liabilities	9,610	9,604	8,981
Common stock	7	7	7
Additional Paid in Capital	27,895	27,997	28,072
Accumulated deficit	0	(425)	(397)
Accumulated other comprehensive loss	(3,796)	(3,270)	(2,667)
Total stockholders' equity attributable to the company	24,106	24,309	25,015
Noncontrolling Interests	240	246	246
Total Equity	24,346	24,555	25,261
Liabilities and Equity	41,690	42,397	43,235
EID [Member]
Cash and cash equivalents	2,768	1,764	1,980
Marketable Securities	152	5	117
Accounts and notes receivable - net	5,627	5,528	6,590
Inventories	4,374	5,032	4,403
Other current assets	1,167	1,190	1,043
Total current assets	14,088	13,519	14,133
Investments in nonconsolidated affiliates	62	66	70
Property, plant and equipment - net of accumulated depreciation (September 30, 2020 - $3,712; December 31, 2019 - $3,326; September 30, 2019 - $3,186)	4,273	4,546	4,503
Goodwill	10,110	10,229	10,168
Other intangible assets	10,914	11,424	11,667
Deferred Income Taxes	289	287	270
Other assets	1,954	2,326	2,440
Total Assets	41,690	42,397	43,251
Short-term borrowings and finance lease obligations	2,142	7	3,604
Accounts payable	2,994	3,702	3,014
Income Taxes Payable	168	95	126
Accrued and other current liabilities	2,452	4,440	2,298
Total current liabilities	7,756	8,244	9,042
Long-term Debt	1,102	115	116
Long Term Debt - Related Party	3,712	4,021	4,037
Deferred income tax liabilities	740	920	1,328
Pension and other post employment benefits - noncurrent	5,904	6,377	5,405
Other noncurrent obligations	1,864	2,192	2,132
Total noncurrent liabilities	13,322	13,625	13,018
Common stock	0	0	0
Additional Paid in Capital	23,995	23,958	23,963
Accumulated deficit	173	(406)	(351)
Accumulated other comprehensive loss	(3,796)	(3,270)	(2,667)
Total stockholders' equity attributable to the company	20,611	20,521	21,184
Noncontrolling Interests	1	7	7
Total Equity	20,612	20,528	21,191
Liabilities and Equity	41,690	42,397	43,251
EID [Member] | $4.50 Series Preferred Stock [Member]
Preferred Stock	169	169	169
EID [Member] | $3.50 Series Preferred Stock [Member]
Preferred Stock	$ 70	$ 70	$ 70

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parentheticals) - USD ($)	Sep. 30, 2020	Dec. 31, 2019	Sep. 30, 2019
Common Stock, Par Value	$ 0.01	$ 0.01	$ 0.01
Common Stock, Shares Authorized	1,666,667,000	1,666,667,000	1,666,667,000
Common Stock, Shares, Outstanding	747,492,000	748,577,000	748,390,000
Accumulated Depreciation	$ (3,712,000,000)	$ (3,326,000,000)	$ (3,186,000,000)
EID [Member]
Common Stock, Par Value	$ 0.30	$ 0.30	$ 0.30
Common Stock, Shares Authorized	1,800,000,000	1,800,000,000	1,800,000,000
Common Stock, Shares, Outstanding	200	200	200
Accumulated Depreciation	$ (3,712,000,000)	$ (3,326,000,000)	$ (3,186,000,000)
EID [Member] | $4.50 Series Preferred Stock [Member]
Preferred Stock, Par Value	$ 0	$ 0	$ 0
Preferred Stock, Shares Authorized	23,000,000	23,000,000	23,000,000
Preferred Stock, Shares Issued	1,673,000	1,673,000	1,673,000
Preferred Stock, Redemption Amount	$ 120	$ 120	$ 120
EID [Member] | $3.50 Series Preferred Stock [Member]
Preferred Stock, Par Value	$ 0	$ 0	$ 0
Preferred Stock, Shares Authorized	23,000,000	23,000,000	23,000,000
Preferred Stock, Shares Issued	700,000	700,000	700,000
Preferred Stock, Redemption Amount	$ 102	$ 102	$ 102

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Millions		9 Months Ended
		Sep. 30, 2020	Sep. 30, 2019
Cash used for operating activities
Net income (loss)		$ 658	$ (923)	[1]
Benefit from Deferred Income Tax		(153)	(427)	[1]
Net Periodic Pension (Benefit) Cost		(306)	(208)	[1]
Pension Contributions		(53)	(109)	[1]
Net loss (gain) on sales of property, businesses, consolidated companies, and investments		29	(69)	[1]
Restructuring and Asset related charges, net		298	167
Amortization of inventory step-up		0	272	[1]
Goodwill, Impairment Charge		0	1,102	[1]
Loss on Early Extinguishment of Debt		0	13	[1]
Other net loss		240	184	[1]
Changes in operating assets and liabilities - net		(2,818)	(3,732)	[1]
Cash used for operating activities		(1,237)	(2,303)	[1]
Cash used for investing activities
Capital expenditures		(301)	(1,015)	[1]
Proceeds from the sale of property, businesses, and consolidated companies, net of cash divested		22	142	[1]
Acquisitions of Businesses, Net of Cash Acquired		0	(9)	[1]
Investments in and loans to nonconsolidated affiliates		(1)	(10)	[1]
Proceeds from sales of ownership interests in nonconsolidated affiliates		0	21	[1]
Purchases of investments		(656)	(133)	[1]
Proceeds from Sale and Maturities of Investments		498	42	[1]
Other investing activities - net		(7)	(2)	[1]
Cash used for investing activities		(445)	(964)	[1]
Cash provided by financing activities
Net change in borrowings (less than 90 days)		1,582	1,729	[1]
Proceeds from debt		2,434	1,001	[1]
Payments on Debt		(879)	(6,803)	[1]
Repurchase of Common Stock		(83)	(25)	[1]
Proceeds from Exercise of Stock Options		19	43	[1]
Dividends paid to stockholders		(291)	(97)	[1]
Payments for acquisition of subsidiary's interest from the non-controlling Interests		(60)	0	[1]
Distributions to DowDuPont		0	(317)	[1]
Cash transferred to DowDuPont at Internal Reorganizations		0	(2,053)	[1]
Contributions from Dow and DowDuPont		0	7,396	[1]
Debt Extinguishment Cost		0	(79)	[1]
Other financing activities		(27)	(34)	[1]
Cash provided by financing activities		2,695	761	[1]
Effect of Exchange Rate Changes on Cash, Cash Equivalents and Restricted Cash		(64)	(118)	[1]
Increase (Decrease) in Cash, Cash Equivalents, Restricted Cash		949	(2,624)	[1]
Cash, Cash Equivalents and Restricted Cash at Beginning of Period		2,173	5,024	[1]
Cash, Cash Equivalents and Restricted Cash at End of Period	[2]	3,122	2,400	[1]
EID [Member]
Cash used for operating activities
Net income (loss)		596	(976)	[3]
Depreciation and Amortization		868	711
Benefit from Deferred Income Tax		(153)	(427)	[3]
Net Periodic Pension (Benefit) Cost		(306)	(208)	[3]
Pension Contributions		(53)	(109)	[3]
Net loss (gain) on sales of property, businesses, consolidated companies, and investments		29	(69)	[3]
Restructuring and Asset related charges, net		298	167
Amortization of inventory step-up		0	272	[3]
Goodwill, Impairment Charge		0	1,102	[3]
Loss on Early Extinguishment of Debt		0	13	[3]
Other net loss		240	184	[3]
Changes in operating assets and liabilities - net		(2,802)	(3,697)	[3]
Cash used for operating activities		(1,283)	(2,321)	[3]
Cash used for investing activities
Capital expenditures		(301)	(1,015)	[3]
Proceeds from the sale of property, businesses, and consolidated companies, net of cash divested		22	142	[3]
Acquisitions of Businesses, Net of Cash Acquired		0	(9)	[3]
Investments in and loans to nonconsolidated affiliates		(1)	(10)	[3]
Proceeds from sales of ownership interests in nonconsolidated affiliates		0	21	[3]
Purchases of investments		(656)	(133)	[3]
Proceeds from Sale and Maturities of Investments		498	42	[3]
Other investing activities - net		(7)	(2)	[3]
Cash used for investing activities		(445)	(964)	[3]
Cash provided by financing activities
Net change in borrowings (less than 90 days)		1,582	1,729	[3]
Proceeds from Related Party Debt		67	4,160	[3]
Repayments of Related Party Debt		(376)	(123)	[3]
Proceeds from debt		2,434	1,001	[3]
Payments on Debt		(879)	(6,803)	[3]
Proceeds from Exercise of Stock Options		19	43	[3]
Payments for acquisition of subsidiary's interest from the non-controlling Interests		(60)	0	[3]
Distributions to DowDuPont		0	(317)	[3]
Cash transferred to DowDuPont at Internal Reorganizations		0	(2,053)	[3]
Contributions from Dow and DowDuPont		0	3,255	[3]
Debt Extinguishment Cost		0	(79)	[3]
Other financing activities		(46)	(34)	[3]
Cash provided by financing activities		2,741	779	[3]
Effect of Exchange Rate Changes on Cash, Cash Equivalents and Restricted Cash		(64)	(118)	[3]
Increase (Decrease) in Cash, Cash Equivalents, Restricted Cash		949	(2,624)	[3]
Cash, Cash Equivalents and Restricted Cash at Beginning of Period		2,173	5,024	[3]
Cash, Cash Equivalents and Restricted Cash at End of Period		3,122	2,400	[3]
Total company [Member]
Cash used for operating activities
Depreciation and Amortization		868	1,310	[1]
Restructuring and Asset related charges, net		298	284	[1]
Total company [Member] | EID [Member]
Cash used for operating activities
Depreciation and Amortization		868	1,310	[3]
Restructuring and Asset related charges, net		$ 298	$ 284	[3]
[1]	The cash flows for the nine months ended September 30, 2019 includes cash flows of EID's ECP and Specialty Products Entities.
[2]	See page 20 for reconciliation of cash and cash equivalents and restricted cash presented in interim Condensed Consolidated Balance Sheets to total cash, cash equivalents and restricted cash presented in the interim Condensed Consolidated Statements of Cash Flows.
[3]	The cash flows for the nine months ended September 30, 2019 includes cash flows of EID's ECP and Specialty Products Entities.

Statement of Stockholders Equit

Statement of Stockholders Equity Statement - USD ($) $ in Millions	Total		Common Stock [Member]	Additional Paid-in Capital [Member]	Divisional Equity [Member]	Retained Earnings [Member]	Accumulated Other Comp (Loss) Income	Noncontrolling Interest [Member]	EID [Member]		EID [Member]Preferred Stock [Member]	EID [Member]Common Stock [Member]	EID [Member]Additional Paid-in Capital [Member]	EID [Member]Divisional Equity [Member]	EID [Member]Retained Earnings [Member]	EID [Member]Accumulated Other Comp (Loss) Income	EID [Member]Noncontrolling Interest [Member]	Corteva [Member]EID [Member]	Corteva [Member]EID [Member]Additional Paid-in Capital [Member]
Beginning Balance at Dec. 31, 2018	$ 75,153		$ 0	$ 0	$ 78,020	$ 0	$ (3,360)	$ 493	$ 75,153		$ 0	$ 0	$ 0	$ 78,259	$ 0	$ (3,360)	$ 254
Net income (loss)	176				164			12	176					166			10
Other comprehensive (loss) income	(74)						(74)		(74)							(74)
Distributions	(317)				(317)				(317)					(317)
Contributions	88				88				88					88
Issuance of Stock	35				35				35					35
Share-based compensation	18				18				18					18
Dividends, Preferred Stock									(2)					(2)
Other-net	(5)				(3)			(2)	(3)					(3)
Ending Balance at Mar. 31, 2019	75,074		0	0	78,005	0	(3,434)	503	75,074		0	0	0	78,244	0	(3,434)	264
Beginning Balance at Dec. 31, 2018	75,153		0	0	78,020	0	(3,360)	493	75,153		0	0	0	78,259	0	(3,360)	254
Net income (loss)	(923)	[1]							(976)	[2]
Other comprehensive (loss) income	(521)						(521)		(521)
Distributions	(317)	[1]							(317)	[2]
Contributions	7,396	[1]							3,255	[2]
Ending Balance at Sep. 30, 2019	25,261		7	28,072		(397)	(2,667)	246	21,191		239	0	23,963		(351)	(2,667)	7
Beginning Balance at Mar. 31, 2019	75,074		0	0	78,005	0	(3,434)	503	75,074		0	0	0	78,244	0	(3,434)	264
Net income (loss)	(594)				(805)	197		14	(617)					(806)	180		9
Other comprehensive (loss) income	(155)						(155)		(155)							(155)
Common Stock Dividends ($.13 per share)	(97)					(97)
Contributions	7,308				7,308				3,168					3,168
Issuance of Stock	4				4				4					4
Share-based compensation	55			11	44				55				11	44
Dividends, Preferred Stock									(5)						(5)
Impact of Internal Reorganizations	(55,496)				(56,479)		1,214	(231)	(55,496)					(56,479)		1,214	(231)
Reclassification of Divisional Equity to APIC	0		7	28,070	(28,077)				0		239		23,936	(24,175)
Other-net	(32)					(3)		(29)	(27)						(3)		(24)
Ending Balance at Jun. 30, 2019	26,067		7	28,081	$ 0	97	(2,375)	257	22,001		239	0	23,947	$ 0	172	(2,375)	18
Net income (loss)	(505)					(494)		(11)	(535)						(524)		(11)
Other comprehensive (loss) income	(292)						(292)		(292)							(292)
Issuance of Stock	4			4
Share-based compensation	12			12					12				12
Dividends, Preferred Stock									4				4
Common stock repurchase	(25)			(25)
Other-net									1						1
Ending Balance at Sep. 30, 2019	25,261		7	28,072		(397)	(2,667)	246	21,191		239	0	23,963		(351)	(2,667)	7
Beginning Balance at Dec. 31, 2019	24,555		7	27,997		(425)	(3,270)	246	20,528		239	0	23,958		(406)	(3,270)	7
Net income (loss)	282					272		10	258						250		8
Other comprehensive (loss) income	(663)						(663)		(663)							(663)
Common Stock Dividends ($.13 per share)	(97)			(97)
Issuance of Stock	14			14														$ 14	$ 14
Share-based compensation	2			2					2				2
Dividends, Preferred Stock									(2)				(2)
Common stock repurchase	(50)			(50)
Other-net	36			40		(2)		(2)	30				32		(2)
Ending Balance at Mar. 31, 2020	24,079		7	27,906		(155)	(3,933)	254	20,167		239	0	24,004		(158)	(3,933)	15
Beginning Balance at Dec. 31, 2019	24,555		7	27,997		(425)	(3,270)	246	20,528		239	0	23,958		(406)	(3,270)	7
Net income (loss)	658								596
Other comprehensive (loss) income	(526)						(526)		(526)
Distributions	0								0
Contributions	0								0
Ending Balance at Sep. 30, 2020	24,346		7	27,895		0	(3,796)	240	20,612		239	0	23,995		173	(3,796)	1
Beginning Balance at Mar. 31, 2020	24,079		7	27,906		(155)	(3,933)	254	20,167		239	0	24,004		(158)	(3,933)	15
Net income (loss)	766					760		6	742						739		3
Other comprehensive (loss) income	88						88		88							88
Common Stock Dividends ($.13 per share)	(97)					(97)
Issuance of Stock	3			3														3	3
Share-based compensation	19			19					19				19
Dividends, Preferred Stock									(3)						(3)
Acquisition of a noncontrolling interest in consolidated subsidiaries	(52)			(37)				(15)	(52)				(37)				(15)
Other-net	(5)							(5)	(8)				(8)		2		(2)
Ending Balance at Jun. 30, 2020	24,801		7	27,891		508	(3,845)	240	20,956		239	0	23,981		580	(3,845)	1
Net income (loss)	(390)					(392)		2	(404)						(404)
Other comprehensive (loss) income	49						49		49							49
Retained Earnings, Share-based Payment Arrangement, Increase for Cost Recognition						(1)									(1)
Common Stock Dividends ($.13 per share)	(97)					(97)
Issuance of Stock	2			2														$ 2	$ 2
Share-based compensation	15			16					15				16
Dividends, Preferred Stock									(2)						(2)
Common stock repurchase	(33)			(15)		(18)
Other-net	(1)			1				(2)	(4)				(4)
Ending Balance at Sep. 30, 2020	$ 24,346		$ 7	$ 27,895		$ 0	$ (3,796)	$ 240	$ 20,612		$ 239	$ 0	$ 23,995		$ 173	$ (3,796)	$ 1
[1]	The cash flows for the nine months ended September 30, 2019 includes cash flows of EID's ECP and Specialty Products Entities.
[2]	The cash flows for the nine months ended September 30, 2019 includes cash flows of EID's ECP and Specialty Products Entities.

Statement of Stockholders' Equi

Statement of Stockholders' Equity Parentheticals (Parentheticals) - $ / shares	3 Months Ended
	Sep. 30, 2020	Jun. 30, 2020	Sep. 30, 2019	Jun. 30, 2019
Common Stock, Dividends, Per Share, Declared	$ 0.13	$ 0.13	$ 0.13
EID [Member] | $4.50 Series Preferred Stock [Member]
Preferred Stock, Dividends Per Share, Declared	1.125	1.125	1.125	$ 1.125
EID [Member] | $3.50 Series Preferred Stock [Member]
Preferred Stock, Dividends Per Share, Declared	$ 0.875	$ 0.875	$ 0.875	$ 0.875

Summary of Significant Accounti

Summary of Significant Accounting Policies (Notes)	9 Months Ended
	Sep. 30, 2020
Accounting Policies [Abstract]
Significant Accounting Policies [Text Block]	SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Interim Financial Statements The accompanying unaudited interim Consolidated Financial Statements have been prepared in accordance with generally accepted accounting principles in the United States of America ("GAAP") for interim financial information and the instructions to Form 10-Q and Rule 10-01 of Regulation S-X. In the opinion of management, all adjustments (consisting of normal recurring adjustments) considered necessary for a fair statement of the results for interim periods have been included. Results for interim periods should not be considered indicative of results for a full year. These interim Consolidated Financial Statements should be read in conjunction with the audited Consolidated Financial Statements and Notes thereto contained in the company’s Annual Report on Form 10-K for the year ended December 31, 2019, collectively referred to as the “2019 Annual Report.” The interim Consolidated Financial Statements include the accounts of the company and all of its subsidiaries in which a controlling interest is maintained. Basis of Presentation On April 1, 2019, EID completed the transfer of the assets and liabilities aligned with EID’s materials science business, including EID’s ethylene and ethylene copolymers business, excluding its ethylene acrylic elastomers business, (“EID ECP”) to separate legal entities (the “Materials Science Entities”) that were ultimately conveyed by DowDuPont to Dow. On May 1, 2019, EID completed the transfer of the assets and liabilities aligned with the EID’s specialty products business to separate legal entities (“EID Specialty Products Entities”), which were then distributed to DowDuPont. In accordance with GAAP, the financial position and results of operations of EID ECP and the EID Specialty Products Entities are presented as discontinued operations and, as such, have been excluded from continuing operations and segment results for the three and nine months ended September 30, 2019. The cash flows, comprehensive (loss) income, and equity related to EID ECP and the EID Specialty Products Entities have not been segregated and are included in the interim Condensed Consolidated Statements of Cash Flows, Consolidated Statements of Comprehensive Income (Loss), and Consolidated Statements of Equity, respectively, the three and nine months ended September 30, 2019. Amounts related to EID ECP and the EID Specialty Products Entities are consistently included or excluded from the Notes to the interim Consolidated Financial Statements based on the respective financial statement line item. See Note 3 - Divestitures and Other Transactions, for additional information. Prior to the Corteva Distribution, the combined financial statements were derived from the consolidated financial statements and accounting records of EID as well as the carve-out financial statements of DAS. The DAS carve-out financial statements reflect the historical results of operations, financial position, and cash flows of Historical Dow's Agricultural Sciences Business and include allocations of certain expenses for services from Historical Dow, including, but not limited to, general corporate expenses related to finance, legal, information technology, human resources, ethics and compliance, shared services, employee benefits and incentives, insurance, and stock-based compensation. These expenses were allocated on the basis of direct usage when identifiable, with the remainder allocated under the basis of headcount or other measures. Beginning in the second quarter 2019, the financial statements are presented on a consolidated basis. The company's interim Condensed Consolidated Balance Sheets for all periods presented consist of Corteva, Inc. and its consolidated subsidiaries. The company's Consolidated Statements of Operations (the "Consolidated Statements of Operations") for all periods prior to April 30, 2019 consist of the combined results of operations for Historical EID and DAS. The Consolidated Statements of Operations for all periods after May 1, 2019 represent the consolidated balances of the company. Intercompany balances and transactions with Historical EID and DAS have been eliminated. During the first quarter 2020, the company recorded an increase of $40 million to APIC relating to net assets recorded as transferred as part of the 2019 Internal Reorganizations that were retained. Goodwill and indefinite lived intangibles impairment testing As a result of changes in the company's long-term projections driven largely by the impacts of the novel coronavirus pandemic ("COVID 19") on the mid-term forecasted cash flows of the business, including, but not limited to currency fluctuations, expectations of future planted area (as influenced by consumer demand, ethanol markets and government policies and regulations) and relative commodity prices, the company determined a triggering event had occurred during the second quarter of 2020 that required an interim impairment assessment for its seed and crop protection reporting units and its tradename indefinite lived intangible asset.

Recent Accounting Guidance

Recent Accounting Guidance	9 Months Ended
	Sep. 30, 2020
Accounting Changes and Error Corrections [Abstract]
Recent Accounting Guidance	RECENT ACCOUNTING GUIDANCE Recently Adopted Accounting Guidance In June 2016, the FASB issued ASU 2016-13, Financial Instruments (Topic 326): Credit Losses - Measurement of Credit Losses on Financial Statements, which requires financial assets measured at amortized cost basis to be presented at the net amount expected to be collected. The amortized cost basis of financial assets should be reduced by expected credit losses to present the net carrying value in the financial statements at the amount expected to be collected. The measurement of expected credit losses is based on past events, historical experience, current conditions and forecasts that affect the collectability of the financial assets. Additionally, credit losses relating to available-for-sale debt securities should be recorded through an allowance for credit losses. The company adopted the guidance in the first quarter of 2020. The primary impact of adoption related to the credit losses on accounts and notes receivable, which is applied using a cumulative-effect adjustment in the period of adoption, and prior periods are not restated. The adoption of ASU 2016-13 did not have a material impact on the company’s financial position, results of operations or cash flows. See Note 10 - Accounts and Notes Receivable - Net for additional information. In November 2018, the FASB issued ASU 2018-18, Collaborative Arrangements (Topic 808): Clarifying the Interaction between Topic 808 and Topic 606, which provides guidance on whether certain transactions between collaborative arrangement participants should be accounted for as revenue under Topic 606 when the collaborative arrangement participant is a customer in the context of a unit of account. Accordingly, this amendment added unit of account guidance in Topic 606 when an entity is assessing whether the collaborative arrangement, or a part of the arrangement, is within the scope of Topic 606. In addition, the amendment provides certain guidance on presenting the collaborative arrangement transaction together with Topic 606. ASU 2018-18 is effective for fiscal years beginning after December 15, 2019 and interim periods within those fiscal years and early adoption is permitted. This ASU is to be applied retrospectively to the date of initial application of Topic 606. The company adopted this guidance on January 1, 2020 and it did not have a material impact on the company’s financial position, results of operations or cash flows. In March 2020, the FASB issued ASU 2020-04, Facilitation of the Effects of Reference Rate Reform on Financial Reporting (Topic 848), which provides companies with optional financial reporting alternatives to reduce the cost and complexity associated with the accounting for contracts and hedging relationships affected by reference rate reform. The amendments in this Update are effective for all entities as of March 12, 2020 through December 31, 2022. The adoption of ASU 2020-04 did not have a material impact on the company's financial position, results of operations or cash flows, and will apply to future changes. Accounting Guidance Issued But Not Adopted as of September 30, 2020 In December 2019, the FASB issued ASU 2019-12, Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes, which was part of the FASB’s Simplification Initiative to identify, evaluate, and improve areas of U.S. GAAP for which cost and complexity can be reduced, while maintaining or improving the usefulness of the information provided to users of financial statements. This ASU amends ASC 740, Income Taxes, by removing certain exceptions to the general principles, and clarifying and amending current guidance. The new standard is effective for fiscal years, and periods within those fiscal years, beginning after December 15, 2020. Early adoption is permitted, however all amended guidance must be adopted in the same period and should be reflected as of the beginning of the annual period if initially adopted and applied during an interim period. The company is currently evaluating the impact of adopting this guidance and does not expect it will have a material impact on the company's financial position, results of operations, or cash flows.

Divestitures and Other Transact

Divestitures and Other Transactions	9 Months Ended
	Sep. 30, 2020
Discontinued Operations and Disposal Groups [Abstract]
Disposal Groups, Including Discontinued Operations, Disclosure [Text Block]	DIVESTITURES AND OTHER TRANSACTIONS Separation Agreements In connection with the Distributions, DuPont, Corteva, and Dow (together, the “Parties” and each a “Party”) have entered into certain agreements to effect the Separation, provide for the allocation of DowDuPont’s assets, employees, liabilities and obligations (including its investments, property and employee benefits and tax-related assets and liabilities) among the Parties, and provide a framework for Corteva's relationship with Dow and DuPont following the separations and Distributions (collectively, the "Separation Agreements"). For further details on the Separation Agreements, refer to the 2019 Annual Report. For additional information see Note 14 - Commitments and Contingent Liabilities. DuPont Pursuant to the Separation Agreements, DuPont and Corteva indemnifies the other against certain litigation, environmental, tax, workers' compensation and other liabilities that arose prior to the Corteva Distribution. The term of this indemnification is generally indefinite and includes defense costs and expenses, as well as monetary and non-monetary settlements and judgments. In connection with the recognition of liabilities related to these matters, the company records an indemnification asset when recovery is deemed probable. At September 30, 2020, the indemnification assets are $22 million within accounts and notes receivable - net and $50 million within other assets in the interim Condensed Consolidated Balance Sheet. At September 30, 2020, the indemnification liabilities are $8 million within accrued and other current liabilities and $71 million within other noncurrent obligations in the interim Condensed Consolidated Balance Sheet. Dow Pursuant to the Separation Agreements, Dow and Corteva indemnifies the other against certain litigation, environmental, tax and other liabilities that arose prior to the Corteva Distribution. The term of this indemnification is generally indefinite and includes defense costs and expenses, as well as monetary and non-monetary settlements and judgments. In connection with the recognition of liabilities related to these matters, the company records an indemnification asset when recovery is deemed probable. At September 30, 2020, the indemnification assets are $15 million within accounts and notes receivable - net in the interim Condensed Consolidated Balance Sheet. At September 30, 2020, the indemnification liabilities are $102 million within accrued and other current liabilities and $13 million within other noncurrent obligations in the interim Condensed Consolidated Balance Sheet. EID ECP Divestiture As discussed in Note 1 - Summary of Significant Accounting Policies, on April 1, 2019, EID completed the transfer of the entities and related assets and liabilities of EID ECP to Dow. As a result, the financial results of EID ECP are reflected as discontinued operations, as summarized below: (In millions) Nine Months Ended Net sales $ 362 Cost of goods sold 259 Research and development expense 4 Selling, general and administrative expenses 9 Amortization of intangibles 23 Restructuring and asset related charges - net 2 Integration and separation costs 44 Other income - net 2 Income from discontinued operations before income taxes 23 Provision for income taxes on discontinued operations 4 Income from discontinued operations after income taxes $ 19 The following table presents the depreciation, amortization of intangibles, and capital expenditures of the discontinued operations related to EID ECP: (In millions) Nine Months Ended Depreciation $ 28 Amortization of intangibles $ 23 Capital expenditures $ 16 EID Specialty Products Divestiture As discussed in Note 1 - Summary of Significant Accounting Policies, on May 1, 2019, the company completed the transfer of the entities and related assets and liabilities of EID Specialty Products Entities to DowDuPont. As a result, the financial results of the EID Specialty Products Entities are reflected as discontinued operations, as summarized below: (In millions) Nine Months Ended Net sales $ 5,030 Cost of goods sold 3,352 Research and development expense 204 Selling, general and administrative expenses 573 Amortization of intangibles 267 Restructuring and asset related charges - net 115 Integration and separation costs 253 Goodwill impairment 1,102 Other income - net 38 Loss from discontinued operations before income taxes (798) Provision for income taxes on discontinued operations 82 Loss from discontinued operations after income taxes $ (880) For the three months ended September 30, 2019, the company recorded income from discontinued operations after income taxes of $22 million related to the adjustment of certain prior year tax positions. EID Specialty Products Impairment As a result of the Merger and related acquisition method of accounting, Historical EID’s assets and liabilities were measured at fair value resulting in increases to the company’s goodwill and other intangible assets. The fair value valuation increased the risk that any declines in financial projections, including changes to key assumptions, could have a material, negative impact on the fair value of the company’s reporting units and assets, and therefore could result in an impairment. As a result of the Internal Reorganization, in the second quarter of 2019, EID assessed the recoverability of the goodwill within the electronics and communications, protection solutions, nutrition and health, transportation and advanced polymers, packaging and specialty plastics, industrial biosciences, and clean technologies reporting units, and the overall carrying value of the net assets in the disposal group that was distributed to DowDuPont on May 1, 2019. As a result of this analysis, the company determined that the fair value of certain reporting units related to the EID specialty products businesses were below carrying value resulting in pre-tax, non-cash goodwill impairment charges totaling $1,102 million reflected in loss from discontinued operations after income taxes. Revised financial projections reflect unfavorable market conditions, driven by slowed demand in the biomaterials business unit, coupled with challenging conditions in U.S. bioethanol markets. These revised financial projections resulted in a reduction in the long-term forecasts of sales and profitability as compared to prior projections. The company’s analyses above using discounted cash flow models (a form of the income approach) utilized Level 3 unobservable inputs. The company’s significant assumptions in these analyses include, but are not limited to, future cash flow projections, the weighted average cost of capital, the terminal growth rate, and the tax rate. The company’s estimates of future cash flows are based on current regulatory and economic climates, recent operating results, and planned business strategies. These estimates could be negatively affected by changes in federal, state, or local regulations or economic downturns. Future cash flow estimates are, by their nature, subjective and actual results may differ materially from the company’s estimates. The company also used a form of the market approach (utilizes Level 3 unobservable inputs), which is derived from metrics of publicly traded companies or historically completed transactions of comparable businesses. The selection of comparable businesses is based on the markets in which the reporting units operate giving consideration to risk profiles, size, geography, and diversity of products and services. As such, the company believes the current assumptions and estimates utilized are both reasonable and appropriate. In addition, the company performed an impairment analysis related to the equity method investments held by the EID specialty products businesses, as of May 1, 2019. The company applied the net asset value method under the cost approach to determine the fair value of the equity method investments in the EID specialty products businesses. Based on updated projections, the company determined the fair value of an equity method investment was below the carrying value and had no expectation the fair value would recover in the short-term due to the current economic environment. As a result, management concluded the impairment was other-than-temporary and recorded an impairment charge of $63 million, reflected in loss from discontinued operations after income taxes. Additionally, this impairment is reflected within restructuring and asset related charges - net in the nine months ended September 30, 2019, within the table above. The following table presents the depreciation, amortization of intangibles, and capital expenditures of the discontinued operations related to the EID Specialty Products Entities: (In millions) Nine Months Ended Depreciation $ 281 Amortization of intangibles $ 267 Capital expenditures $ 481 Merger Remedy - Divested EID Ag Business Refer to the 2019 Annual Report for further details on the Divested Ag Business. For the nine months ended September 2019, the company recorded income from discontinued operations after incomes taxes of $80 million related to changes in accruals for certain prior year tax positions. Other Discontinued Operations Activity For the nine months ended September 2019, the company recorded income from discontinued operations after income taxes of $86 million, respectively, related to the adjustment of certain unrecognized tax benefits for positions taken on items from prior years from previously divested businesses.

Revenue (Notes)

Revenue (Notes)	9 Months Ended
	Sep. 30, 2020
Revenue from Contract with Customer [Abstract]
Revenue from Contract with Customer	REVENUE Revenue Recognition Products Substantially all of Corteva's revenue is derived from product sales. Product sales consist of sales of Corteva's products to farmers, distributors, and manufacturers. Corteva considers purchase orders, which in some cases are governed by master supply agreements, to be a contract with a customer. Contracts with customers are considered to be short-term when the time between order confirmation and satisfaction of the performance obligations is equal to or less than one year. However, the company has some long-term contracts which can span multiple years. Licenses of Intellectual Property Corteva enters into licensing arrangements with customers under which it licenses its intellectual property. Revenue from the majority of intellectual property licenses is derived from sales-based royalties. Revenue for licensing agreements that contain sales-based royalties is recognized at the later of (i) when the subsequent sale occurs or (ii) when the performance obligation to which some or all of the royalty has been allocated is satisfied. Remaining Performance Obligations Remaining performance obligations represent the transaction price allocated to unsatisfied or partially unsatisfied performance obligations. At September 30, 2020, the company had remaining performance obligations related to material rights granted to customers for contract renewal options of $114 million ($108 million at both December 31, 2019 and September 30, 2019, respectively). The company expects revenue to be recognized for the remaining performance obligations over the next 1 year to 6 years. Contract Balances Contract liabilities primarily reflect deferred revenue from prepayments under contracts with customers where the company receives advance payments for products to be delivered in future periods. Corteva classifies deferred revenue as current or noncurrent based on the timing of when the company expects to recognize revenue. Contract assets primarily include amounts related to contractual rights to consideration for completed performance not yet invoiced. Accounts receivable are recorded when the right to consideration becomes unconditional. Contract Balances September 30, 2020 December 31, 2019 September 30, 2019 (In millions) Accounts and notes receivable - trade 1 $ 4,638 $ 4,396 $ 5,372 Contract assets - current 2 $ 21 $ 20 $ 20 Contract assets - noncurrent 3 $ 52 $ 49 $ 49 Deferred revenue - current 4 $ 402 $ 2,584 $ 441 Deferred revenue - noncurrent 5 $ 106 $ 108 $ 117 1. Included in accounts and notes receivable - net in the interim Condensed Consolidated Balance Sheets. 2. Included in other current assets in the interim Condensed Consolidated Balance Sheets. 3. Included in other assets in the interim Condensed Consolidated Balance Sheets. 4. Included in accrued and other current liabilities in the interim Condensed Consolidated Balance Sheets. 5. Included in other noncurrent obligations in the interim Condensed Consolidated Balance Sheets. Revenue recognized during the nine months ended September 30, 2020 from amounts included in deferred revenue at the beginning of the period was $2,195 million ($2,013 million in the nine months ended September 30, 2019). Disaggregation of Revenue Corteva's operations are classified into two reportable segments: Seed and Crop Protection. The company disaggregates its revenue by major product line and geographic region, as the company believes it best depicts the nature, amount and timing of its revenue and cash flows. Net sales by major product line are included below: Three Months Ended Nine Months Ended (In millions) 2020 2019 2020 2019 Corn $ 303 $ 372 $ 4,224 $ 4,149 Soybean 116 168 1,382 1,297 Other oilseeds 62 44 529 469 Other 42 97 381 432 Seed 523 681 6,516 6,347 Herbicides 1 583 574 2,315 2,338 Insecticides 1 395 330 1,218 1,158 Fungicides 1 261 245 714 767 Other 1 101 81 247 253 Crop Protection 1,340 1,230 4,494 4,516 Total $ 1,863 $ 1,911 $ 11,010 $ 10,863 1. Prior periods have been reclassified to conform to current period presentation. Sales are attributed to geographic regions based on customer location. Net sales by geographic region and segment are included below: Seed Three Months Ended Nine Months Ended (In millions) 2020 2019 2020 2019 North America 1 $ 97 $ 226 $ 4,290 $ 4,238 EMEA 2 117 122 1,262 1,200 Latin America 246 271 668 636 Asia Pacific 63 62 296 273 Total $ 523 $ 681 $ 6,516 $ 6,347 Crop Protection Three Months Ended Nine Months Ended (In millions) 2020 2019 2020 2019 North America 1 $ 390 $ 397 $ 1,528 $ 1,562 EMEA 2 198 183 1,163 1,136 Latin America 559 491 1,086 1,144 Asia Pacific 193 159 717 674 Total $ 1,340 $ 1,230 $ 4,494 $ 4,516 1. Represents U.S. & Canada. 2. Europe, Middle East, and Africa ("EMEA").

Restructuring and Asset Related

Restructuring and Asset Related Charges	9 Months Ended
	Sep. 30, 2020
Restructuring and Related Activities [Abstract]
Restructuring and Related Activities Disclosure [Text Block]	RESTRUCTURING AND ASSET RELATED CHARGES - NET Execute to Win Productivity Program During the first quarter of 2020, Corteva approved restructuring actions designed to improve productivity through optimizing certain operational and organizational structures primarily related to the Execute to Win Productivity Program. As a result of these actions, the company expects to record total pre-tax restructuring charges of approximately $185 million, comprised of approximately $125 million of asset related charges (of which $30 million relates to asset retirement obligations), and $60 million of severance and related benefit costs. Of the $185 million, approximately $110 million relates to crop protection, $15 million relates to seed, and $60 million relates to corporate expenses. Future cash payments related to this charge are anticipated to be approximately $85 million, primarily related to the payment of severance and related benefits and asset retirement obligations. The Execute to Win Productivity Program charges related to the segments, as well as corporate expenses, were as follows: Three Months Ended Nine Months Ended (In millions) 2020 2020 Seed $ — $ 3 Crop Protection 30 85 Corporate expenses — 46 Total $ 30 $ 134 The below is a summary of charges incurred related to the Execute to Win Productivity Program for the three and nine months ended September 30, 2020: Three Months Ended Nine Months Ended (In millions) 2020 2020 Severance and related benefit costs $ — $ 46 Asset related charges 30 88 Total restructuring and asset related charges - net $ 30 $ 134 A reconciliation of the December 31, 2019 to the September 30, 2020 liability balances related to the Execute to Win Productivity Program is summarized below: (In millions) Severance and Related Benefit Costs Asset Related Total Balance at December 31, 2019 $ — $ — $ — Charges to income from continuing operations for the nine months ended September 30, 2020 46 88 134 Payments (5) (3) (8) Asset write-offs — (82) (82) Balance at September 30, 2020 $ 41 $ 3 $ 44 In addition to the above, the company has recorded asset retirement obligations of $29 million as of September 30, 2020. The asset retirement obligations relate to the company’s required demolition and removal for buildings and equipment at third party leased sites and will be recognized as asset related charges over the remaining useful lives of the related assets. The company’s leases require these assets be removed from leased land within 12-24 months of operations being ceased. The company expects operations will cease in 2020 and the assets will be removed within the contractual timeframe. DowDuPont Cost Synergy Program In September and November 2017, DowDuPont and EID approved post-merger restructuring actions under the DowDuPont Cost Synergy Program (the “Synergy Program”), adopted at the time by the DowDuPont Board of Directors. The Synergy Program was designed to integrate and optimize the organization following the Merger and in preparation for the Distributions. The company recorded pre-tax restructuring charges of $851 million inception-to-date under the Synergy Program, consisting of severance and related benefit costs of $319 million, contract termination costs of $193 million, and asset write-downs and write-offs of $339 million. The company does not anticipate any additional material charges under the Synergy Program. Actions associated with the Synergy Program, including employee separations, were substantially complete by the end of 2019. The Synergy Program charges (benefits) related to the segments, as well as corporate expenses, were as follows: Three Months Ended Nine Months Ended (In millions) 2020 2019 2020 2019 Seed $ (1) $ (7) $ (7) $ 66 Crop Protection 10 (1) 13 28 Corporate expenses — — — 20 Total $ 9 $ (8) $ 6 $ 114 The below is a summary of charges (benefits) incurred related to the Synergy Program for the three and nine months ended September 30, 2020 and 2019: Three Months Ended Nine Months Ended (In millions) 2020 2019 2020 2019 Severance and related benefit costs $ — $ — $ — $ 14 Contract termination charges — — — 69 Asset related (benefits) charges 9 (8) 6 31 Total restructuring and asset related charges (benefits) - net $ 9 $ (8) $ 6 $ 114 A reconciliation of the December 31, 2019 to the September 30, 2020 liability balances related to the Synergy Program is summarized below: (In millions) Severance and Related Benefit Costs Costs Associated with Exit and Disposal Activities 1 Asset Related Total Balance at December 31, 2019 $ 29 $ 40 $ — $ 69 Charges to income from continuing operations for the nine months ended September 30, 2020 — — 9 9 Payments (16) (8) 2 (22) Asset write-offs — — (11) (11) Balance at September 30, 2020 $ 13 $ 32 $ — $ 45 1. Relates primarily to contract terminations charges. Other Asset Related Charges During the three and nine months ended September 30, 2020, the company recognized $10 million and $158 million, respectively, in restructuring and asset related charges, net in the interim consolidated statement of operations, from non-cash accelerated prepaid royalty amortization expense related to Roundup Ready 2 Yield ® and Roundup Ready 2 Xtend ® herbicide tolerance traits. Asset Impairments During the three months ended September 30, 2019, and in connection with strategic product and portfolio reviews, the company determined that the fair value of certain intangible assets classified as developed technology, other intangible assets and in-process research and development ("IPR&D") within the Seed segment that primarily relate to heritage DAS intangibles previously acquired from Cooperativa Central de Pesquisa Agrícola's ("Coodetec"), was less than the carrying value. As a

Related Party Transactions (Not

Related Party Transactions (Notes)	9 Months Ended
	Sep. 30, 2020
Related Party Transactions [Abstract]
Related Party Transactions Disclosure [Text Block]	RELATED PARTIES Services Provided by and to Historical Dow and its affiliates Following the Merger and prior to the Dow Distribution, Corteva reported transactions with Historical Dow and its affiliates as related party transactions. Purchases from Historical Dow and its affiliates were $42 million for the nine months ended September 30, 2019. Transactions with DowDuPont

Supplementary Information

Supplementary Information	9 Months Ended
	Sep. 30, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Additional Financial Information Disclosure [Text Block]	SUPPLEMENTARY INFORMATION Other Income - Net Three Months Ended Nine Months Ended (In millions) 2020 2019 2020 2019 Interest income $ 11 $ 13 $ 38 $ 46 Equity in losses of affiliates - net — (3) (3) (8) Net gain (loss) on sales of businesses and other assets 1 1 2 (29) (9) Net exchange losses 2 (67) (11) (127) (70) Non-operating pension and other post employment benefit credit 3 93 47 275 144 Miscellaneous income (expenses) - net 4 (8) 11 (34) (13) Other income - net $ 30 $ 59 $ 120 $ 90 1. The nine months ended September 30, 2020 includes a loss of $(53) million relating to the expected sale of the La Porte site, for which the company signed an agreement in 2020. The nine months ended September 30, 2019 includes a loss of $(24) million relating to DAS’s sale of a joint venture related to synergy actions. 2. Includes net pre-tax exchange losses of $(26) million and $(56) million for the three and nine months ended September 30, 2020, respectively, and $(33) million and $(42) million for the three and nine months ended September 30, 2019, respectively, associated with the devaluation of the Argentine peso. 3. Includes non-service related components of net periodic benefit credits (costs) (interest cost, expected return on plan assets, amortization of unrecognized (gain) loss, amortization of prior service benefit and settlement (loss) gain). 4. Miscellaneous income (expenses) - net, includes losses related to loss on sale of receivables, bank charges and other items. The following table summarizes the impacts of the company's foreign currency hedging program on the company's results of operations. The company routinely uses foreign currency exchange contracts to offset its net exposures, by currency, related to the foreign currency-denominated monetary assets and liabilities. The objective of this program is to maintain an approximately balanced position in foreign currencies in order to minimize, on an after-tax basis, the effects of exchange rate changes on net monetary asset positions. The hedging program gains (losses) are largely taxable (tax deductible) in the U.S., whereas the offsetting exchange gains (losses) on the remeasurement of the net monetary asset positions are often not taxable (tax deductible) in their local jurisdictions. The net pre-tax exchange gains (losses) are recorded in other income - net and the related tax impact is recorded in provision for (benefit from) income taxes on continuing operations in the Consolidated Statements of Operations. (In millions) Three Months Ended Nine Months Ended 2020 2019 2020 2019 Subsidiary Monetary Position (Losses) Gains Pre-tax exchange losses 1 $ (61) $ (66) $ (300) $ (59) Local tax benefits (expenses) 16 1 44 (2) Net after-tax impact from subsidiary exchange losses $ (45) $ (65) $ (256) $ (61) Hedging Program (Losses) Gains Pre-tax exchange (losses) gains $ (6) $ 55 $ 173 $ (11) Tax benefits (expenses) 2 (13) (41) 2 Net after-tax impact from hedging program exchange (losses) gains $ (4) $ 42 $ 132 $ (9) Total Exchange (Losses) Gains Pre-tax exchange losses 1 $ (67) $ (11) $ (127) $ (70) Tax benefits (expenses) 18 (12) 3 — Net after-tax exchange losses $ (49) $ (23) $ (124) $ (70) 1. Includes net pre-tax exchange losses of $(26) million and $(56) million for the three and nine months ended September 30, 2020, respectively, and $(33) million and $(42) million for the three and nine months ended September 30, 2019, respectively, associated with the devaluation of the Argentine peso. Cash, cash equivalents and restricted cash The following table provides a reconciliation of cash and cash equivalents and restricted cash (included in other current assets) presented in the interim Condensed Consolidated Balance Sheets to the total cash, cash equivalents and restricted cash presented in the interim Condensed Consolidated Statements of Cash Flows. (In millions) September 30, 2020 December 31, 2019 September 30, 2019 Cash and cash equivalents $ 2,768 $ 1,764 $ 1,980 Restricted cash 354 409 420 Total cash, cash equivalents and restricted cash $ 3,122 $ 2,173 $ 2,400 EID entered into a trust agreement in 2013 (as amended and restated in 2017), establishing and requiring EID to fund a trust (the "Trust") for cash obligations under certain non-qualified benefit and deferred compensation plans upon a change in control event as defined in the Trust agreement. Under the Trust agreement, the consummation of the Merger was a change in control event. Restricted cash at September 30, 2020, December 31, 2019, and September 30, 2019 is related to the Trust.

Income Taxes

Income Taxes	9 Months Ended
	Sep. 30, 2020
Income Tax Disclosure [Abstract]
Income Tax Disclosure [Text Block]	INCOME TAXES For periods between the Merger Effectiveness Time and the Corteva Distribution, Corteva and its subsidiaries were included in DowDuPont's consolidated federal income tax group and consolidated tax return. Generally, the consolidated tax liability of the DowDuPont U.S. tax group for each year was apportioned among the members of the consolidated group based on each member’s separate taxable income. Corteva, DuPont and Dow intend that to the extent Federal and/or State corporate income tax liabilities are reduced through the utilization of tax attributes of the other, settlement of any receivable and payable generated from the use of the other party’s sub-group attributes will be in accordance with a tax matters agreement. See Note 3 - Divestitures and Other Transactions, for further information related to indemnifications between Corteva, Dow and DuPont. Each year the company files hundreds of tax returns in the various national, state and local income taxing jurisdictions in which it operates. These tax returns are subject to examination and possible challenge by the tax authorities. Positions challenged by the tax authorities may be settled or appealed by the company. As a result, there is an uncertainty in income taxes recognized in the company's financial statements in accordance with accounting for income taxes and accounting for uncertainty in income taxes. The ultimate resolution of such uncertainties is not expected to have a material impact on the company's results of operations. During the nine months ended September 30, 2020, the company recognized a tax benefit of $51 million to provision for income taxes on continuing operations related to a return to accrual adjustment associated with an elective change in accounting method for the 2019 tax year impact of the 2017 Tax Cuts and Jobs Act 's (“The Act”) foreign tax provisions. During the nine months ended September 30, 2020 the company recognized a tax benefit of $14 million to provision for income taxes on continuing operations related to a return to accrual adjustment to reflect a change in estimate on the impact of a tax law enactment in a foreign jurisdiction. During the three and nine months ended September 30, 2019, the company recognized an aggregate net tax benefit of $38 million to benefit from income taxes on continuing operations related to the enactment of Switzerland’s Federal Act on Tax Reform and AHV Financing (TRAF) (i.e., “Swiss Tax Reform”). During the three and nine months ended September 30, 2019, the company recognized a net tax benefit of $13 million and a net tax charge of $83 million, respectively to (benefit from) provision for income taxes on continuing operations related to application of the Act's foreign tax provisions. During the nine months ended September 30, 2019, the company recognized net tax charge of $146 million and a tax benefit of $102 million to provision for income taxes on continuing operations related to U.S. state blended tax rate changes associated with the Internal Reorganizations and an internal legal entity restructuring associated with the Internal Reorganizations. During the nine months ended September 30, 2019, the company recognized an aggregate tax benefit of $21 million to provision for income taxes on continuing operations, respectively, associated with changes in accruals for certain prior year tax positions and reductions in the company's unrecognized tax benefits due to the closure of various tax statutes of limitations. The company routinely uses foreign currency exchange contracts to offset its net exposures, by currency, related to the foreign currency-denominated monetary assets and liabilities. The objective of the program, which resides in the U.S., is to maintain an approximately balanced position in foreign currencies in order to minimize, on an after-tax basis, the effects of exchange rate changes on net monetary asset positions, which can drive material impacts on the company's effective tax rate. For further discussion of pre-tax and after-tax impacts of the company's foreign currency hedging program and net monetary asset programs, refer to Note 7 - Supplementary Information.

Earnings Per Share (Notes)

Earnings Per Share (Notes)	9 Months Ended
	Sep. 30, 2020
Earnings Per Share [Abstract]
Earnings Per Share [Text Block]	EARNINGS PER SHARE OF COMMON STOCK On June 1, 2019, the date of the Corteva Distribution, 748,815,000 shares of the company’s common stock were distributed to DowDuPont shareholders of record as of May 24, 2019. The following tables provide earnings per share calculations for the periods indicated below: Net (Loss) Income for Earnings Per Share Calculations - Basic and Diluted Three Months Ended Nine Months Ended (In millions) 2020 2019 2020 2019 (Loss) income from continuing operations after income taxes $ (390) $ (527) $ 657 $ (228) Net income (loss) attributable to continuing operations noncontrolling interests 2 (11) 18 10 (Loss) income from continuing operations available to Corteva common stockholders (392) (516) 639 (238) (Loss) income from discontinued operations, net of tax — 22 1 (695) Net income attributable to discontinued operations noncontrolling interests — — — 5 Income (loss) from discontinued operations available to Corteva common stockholders — 22 1 (700) Net (loss) income available to common stockholders $ (392) $ (494) $ 640 $ (938) (Loss) Earnings Per Share Calculations - Basic Three Months Ended Nine Months Ended (Dollars per share) 2020 2019 2020 2019 (Loss) earnings per share of common stock from continuing operations $ (0.52) $ (0.69) $ 0.85 $ (0.32) Earnings (loss) per share of common stock from discontinued operations — 0.03 — (0.93) (Loss) earnings per share of common stock $ (0.52) $ (0.66) $ 0.85 $ (1.25) (Loss) Earnings Per Share Calculations - Diluted Three Months Ended Nine Months Ended (Dollars per share) 2020 2019 2020 2019 (Loss) earnings per share of common stock from continuing operations $ (0.52) $ (0.69) $ 0.85 $ (0.32) Earnings (loss) per share of common stock from discontinued operations — 0.03 — (0.93) (Loss) earnings per share of common stock $ (0.52) $ (0.66) $ 0.85 $ (1.25) Share Count Information Three Months Ended Nine Months Ended (Shares in millions) 2020 2019 2020 2019 Weighted-average common shares - basic 1 749.5 749.5 749.5 749.4 Plus dilutive effect of equity compensation plans 2 — — 2.5 — Weighted-average common shares - diluted 749.5 749.5 752.0 749.4 Potential shares of common stock excluded from EPS calculations 3 14.6 13.8 9.7 13.8 1. Share amounts for all periods prior to the Corteva Distribution were based on 748.8 million shares of Corteva, Inc. common stock distributed to holders of DowDuPont's common stock on June 1, 2019, plus 0.6 million of additional shares in which accelerated vesting conditions have been met. 2. Diluted earnings per share considers the impact of potentially dilutive securities except in periods in which there is a loss because the inclusion of the potential common shares would have an anti-dilutive effect. 3. These outstanding potential shares of common stock relating to stock options, restricted stock units and performance-based restricted stock units were excluded from the calculation of diluted earnings per share because the effect of including them would have been anti-dilutive.

Accounts and Notes Receivable (

Accounts and Notes Receivable (Notes)	9 Months Ended
	Sep. 30, 2020
Accounts and Notes Receivable [Abstract]
Loans, Notes, Trade and Other Receivables Disclosure [Text Block]	ACCOUNTS AND NOTES RECEIVABLE - NET (In millions) September 30, 2020 December 31, 2019 September 30, 2019 Accounts receivable – trade 1 $ 3,231 $ 4,225 $ 3,969 Notes receivable – trade 1,2 1,407 171 1,403 Other 3 989 1,132 1,202 Total accounts and notes receivable - net $ 5,627 $ 5,528 $ 6,574 1. Accounts receivable – trade and notes receivable - trade are net of allowances of $210 million at September 30, 2020, $174 million at December 31, 2019, and $170 million at September 30, 2019. The allowance at September 30, 2020 is equal to the expected credit losses and was developed using a loss-rate method. The allowance at December 31, 2019 and September 30, 2019 is equal to the estimated uncollectible amounts and is based on historical collection experience, current economic and market conditions, and review of the current status of customers' accounts. 2. Notes receivable – trade primarily consists of receivables for deferred payment loan programs for the sale of seed products to customers. These loans have terms of one year or less and are primarily concentrated in North America. The company maintains a rigid pre-approval process for extending credit to customers in order to manage overall risk and exposure associated with credit losses. As of September 30, 2020, December 31, 2019, and September 30, 2019 there were no significant impairments related to current loan agreements. 3. Other includes receivables in relation to indemnification assets, value added tax, general sales tax and other taxes. No individual group represents more than 10 percent of total receivables. In addition, Other includes amounts due from nonconsolidated affiliates of $92 million, $119 million, and $127 million as of September 30, 2020, December 31, 2019, and September 30, 2019, respectively. Accounts and notes receivable are carried at the expected amount to be collected, which approximates fair value. The company establishes the allowance for doubtful receivables using a loss-rate method where the loss rate is developed using past events, historical experience, current conditions and forecasts that affect the collectability of the financial assets. The following table summarizes changes in the allowance for doubtful receivables for the nine months ended September 30, 2020: (In millions) Balance at December 31, 2019 $ 174 Additions charged to expenses 153 Write-offs charged against allowance (6) Recoveries collected (99) Other (12) Balance at September 30, 2020 $ 210 The company enters into various factoring agreements with third-party financial institutions to sell its trade receivables under both recourse and non-recourse agreements in exchange for cash proceeds. These financing arrangements result in a transfer of the company's receivables and risks to the third-party. As these transfers qualify as true sales under the applicable accounting guidance, the receivables are derecognized from the Consolidated Balance Sheets upon transfer, and the company receives a payment for the receivables from the third-party within a mutually agreed upon time period. For arrangements involving an element of recourse, which is typically provided through a guarantee of accounts in the event of customer default, the guarantee obligation is measured using market data from similar transactions and reported as a current liability in the Consolidated Balance Sheets. Trade receivables sold under these agreements were $44 million and $221 million for the three and nine months ended September 30, 2020, respectively, and $13 million and $97 million for the three and nine months ended September 30, 2019, respectively. The trade receivables sold that remained outstanding under these agreements which include an element of recourse as of September 30, 2020, December 31, 2019, and September 30, 2019 were $178 million, $171 million, and $61 million, respectively. The net proceeds received are included in cash provided by operating activities in the interim Condensed Consolidated Statements of Cash Flows. The difference between the carrying amount of the trade receivables sold and the sum of the cash received is recorded as a loss on sale of receivables in other income - net in the Consolidated Statements of Operations. The loss on sale of receivables was $11 million and $49 million for the three and nine months ended September 30, 2020 and $4 million and $41 million for the three and nine months ended September 30, 2019, respectively. The guarantee obligations recorded as of September 30, 2020, December 31, 2019, and September 30, 2019 in the interim Condensed Consolidated Balance Sheets were not material. See Note 14 - Commitments and Contingent Liabilities for additional information on the company’s guarantees.

Inventories

Inventories	9 Months Ended
	Sep. 30, 2020
Inventory Disclosure [Abstract]
Inventory Disclosure [Text Block]	INVENTORIES (In millions) September 30, 2020 December 31, 2019 September 30, 2019 Finished products $ 2,074 $ 2,684 $ 2,295 Semi-finished products 1,878 1,850 1,691 Raw materials and supplies 422 498 417 Total inventories $ 4,374 $ 5,032 $ 4,403 As a result of the Merger, a fair value step-up of $2,297 million was recorded for inventories. This fair value step-up was fully amortized, as of September 30, 2019. During the three and nine months ended September 30, 2019, the company recognized $15 million and $272 million of these costs in cost of goods sold within income from continuing operations before income taxes in the Consolidated Statements of Operations.

Other Intangible Assets

Other Intangible Assets	9 Months Ended
	Sep. 30, 2020
Goodwill and Intangible Assets Disclosure [Abstract]
Intangible Assets Disclosure [Text Block]	OTHER INTANGIBLE ASSETS The gross carrying amounts and accumulated amortization of other intangible assets by major class are as follows: (In millions) September 30, 2020 December 31, 2019 September 30, 2019 Gross Accumulated Net Gross Accumulated Net Gross Accumulated Net Intangible assets subject to amortization (Definite-lived): Germplasm 1 $ 6,265 $ (253) $ 6,012 $ 6,265 $ (63) $ 6,202 Customer-related 1,966 (352) 1,614 1,977 (268) 1,709 $ 1,969 $ (238) $ 1,731 Developed technology 1,463 (499) 964 1,463 (370) 1,093 1,463 (332) 1,131 Trademarks/trade names 161 (86) 75 166 (86) 80 166 (84) 82 Favorable supply contracts 475 (279) 196 475 (207) 268 475 (183) 292 Other 2 405 (233) 172 404 (213) 191 401 (206) 195 Total other intangible assets with finite lives 10,735 (1,702) 9,033 10,750 (1,207) 9,543 4,474 (1,043) 3,431 Intangible assets not subject to amortization (Indefinite-lived): IPR&D 10 — 10 10 — 10 100 — 100 Germplasm 1 6,265 — 6,265 Tradename 1,871 — 1,871 1,871 — 1,871 1,871 — 1,871 Total other intangible assets 1,881 — 1,881 1,881 — 1,881 8,236 — 8,236 Total $ 12,616 $ (1,702) $ 10,914 $ 12,631 $ (1,207) $ 11,424 $ 12,710 $ (1,043) $ 11,667 1. Beginning on October 1, 2019, the company changed its indefinite life assertion of the germplasm assets to definite lived with a useful life of 25 years. This change is the result of a more focused development effort of new seed products coupled with an intent to out license select germplasm on a non-exclusive basis. Prior to changing the useful life of the germplasm assets, the company tested the assets for impairment under ASC 350 - Intangibles, Goodwill and Other, concluding the assets were not impaired. 2. Primarily consists of sales and farmer networks, marketing and manufacturing alliances and noncompetition agreements. As discussed in Note 5 - Restructuring and Asset Related Charges - Net, during the three months ended September 30, 2019, and in connection with strategic product and portfolio reviews, the company determined that the fair value of certain intangible assets classified as developed technology, other intangible assets and IPR&D within the Seed segment that primarily relate to heritage DAS intangibles previously acquired from Coodetec was less than the carrying value due to the company’s focus on advancing more competitive products and eliminating redundancy and complexity across the breeding programs. For IPR&D and developed technology, the company concluded these projects were abandoned. For other intangible assets, the company performed an analysis of the fair value using the relief from royalty method (a form of the income approach) using Level 3 inputs within the fair value hierarchy. The key assumptions used in the calculation included projected revenue, royalty rates and discount rates. These key assumptions involve management judgment and estimates relating to future operating performance and economic conditions that may differ from actual cash flows. As a result, the company recorded a pre-tax, non-cash intangible asset impairment charge of $54 million ($41 million after-tax), which is reflected in restructuring and asset related charges - net, in the company's Consolidated Statements of Operations for the three and nine months ended September 30, 2019. The aggregate pre-tax amortization expense from continuing operations for definite-lived intangible assets was $162 million and $501 million for the three and nine months ended September 30, 2020, respectively, and $100 million and $314 million for the three and nine months ended September 30, 2019, respectively. The current estimated aggregate pre-tax amortization expense from continuing operations for the remainder of 2020 and each of the next five years is approximately $160 million, $644 million, $623 million, $544 million, $530 million and $492 million, respectively.

Short-Term Borrowings, Long-Ter

Short-Term Borrowings, Long-Term Debt and Available Credit Facilities	9 Months Ended
	Sep. 30, 2020
Debt Disclosure [Abstract]
Debt Disclosure [Text Block]	SHORT-TERM BORROWINGS, LONG-TERM DEBT AND AVAILABLE CREDIT FACILITIES The following tables summarize Corteva's short-term borrowings and finance lease obligations and long-term debt: Short-term borrowings and finance lease obligations (In millions) September 30, 2020 December 31, 2019 September 30, 2019 Commercial paper $ 926 $ — $ 2,432 Repurchase facility 1,175 — 1,129 Other loans - various currencies 39 2 35 Long-term debt payable within one year 1 1 4 Finance lease obligations payable within one year 1 4 4 Total short-term borrowings and finance lease obligations $ 2,142 $ 7 $ 3,604 The estimated fair value of the company's short-term borrowings, including interest rate financial instruments, was determined using Level 2 inputs within the fair value hierarchy. Based on quoted market prices for the same or similar issues, or on current rates offered to the company for debt of the same remaining maturities, the fair value of the company's short-term borrowings and finance lease obligations was approximately carrying value. The weighted-average interest rate on short-term borrowings outstanding at September 30, 2020, December 31, 2019, and September 30, 2019 was 0.9%, 6.7% and 2.6%, respectively. The change in the weighted-average interest rate was primarily due to lower Commercial Paper and Repurchase Facility interest. Long-Term Debt (In millions) September 30, 2020 December 31, 2019 September 30, 2019 Amount Weighted Average Rate Amount Weighted Average Rate Amount Weighted Average Rate Promissory notes and debentures: Maturing in 2025 $ 500 1.70 % $ — — % $ — — % Maturing in 2030 500 2.30 % $ — — % $ — — % Other loans: Foreign currency loans, various rates and maturities 1 2 4 Medium-term notes, varying maturities through 2041 109 — % 109 1.61 % 110 1.88 % Finance lease obligations 4 5 6 Less: Unamortized debt discount and issuance costs 11 — — Less: Long-term debt due within one year 1 1 4 Total $ 1,102 $ 115 $ 116 The fair value of the company’s long-term borrowings, including debt due within one year, was $1,164 million, $119 million, and $123 million as of September 30, 2020, December 31, 2019, and September 30, 2019, respectively, and was determined using quoted market prices for the same or similar issues, or current rates offered to the company for debt of the same remaining maturities (Level 2 inputs). Debt Offering In May 2020, EID issued $500 million of 1.70 percent Senior Notes due 2025 and $500 million of 2.30 percent Senior Notes due 2030 (the May 2020 Debt Offering). The proceeds of this offering are intended to be used for general corporate purposes, which may include discretionary contributions to the company’s U.S. principal pension plan and repayment of other indebtedness. Repurchase Facility In February 2020, the company entered into a new committed receivable repurchase facility of up to $1.3 billion (the "2020 Repurchase Facility") which expires in December 2020. Under the 2020 Repurchase Facility, Corteva may sell a portfolio of available and eligible outstanding customer notes receivables to participating institutions and simultaneously agree to repurchase at a future date. The 2020 Repurchase Facility is considered a secured borrowing with the customer notes receivable inclusive of those that are sold and repurchased, equal to 105 percent of the outstanding amounts borrowed utilized as collateral. Borrowings under the 2020 Repurchase Facility have an interest rate of LIBOR + 0.75 percent. As of September 30, 2020, $1,234 million of notes receivable, recorded in accounts and notes receivable - net, were pledged as collateral against outstanding borrowings under the 2020 Repurchase Facility of $1,175 million, recorded in short-term borrowings and finance lease obligations on the interim Condensed Consolidated Balance Sheet. Revolving Credit Facilities In November 2018, EID entered into a $3.0 billion 5-year revolving credit facility and a $3.0 billion 3-year revolving credit facility (the “Revolving Credit Facilities”). The Revolving Credit Facilities became effective May 2019. Corteva, Inc. became a party at the time of the Corteva Distribution. The Revolving Credit Facilities may serve as a substitute to the company's commercial paper program, and can be used, from time to time, for general corporate purposes including, but not limited to, the funding of seasonal working capital needs. The Revolving Credit Facilities contain customary representations and warranties, affirmative and negative covenants and events of default that are typical for companies with similar credit ratings. Additionally, the Revolving Credit Facilities contain a financial covenant requiring that the ratio of total indebtedness to total capitalization for Corteva and its consolidated subsidiaries not exceed 0.60. In March 2020, the company drew down $500 million under the $3.0 billion 3-year revolving credit facility as a result of the volatility and increased borrowing costs of commercial paper resulting from the unstable market conditions caused by the COVID-19 pandemic and repaid that borrowing in full in June 2020. There were no additional borrowings and the unused commitments under the 3-year revolving credit facility were $3.0 billion as of September 30, 2020.

Commitments and Contingent Liab

Commitments and Contingent Liabilities	9 Months Ended
	Sep. 30, 2020
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies Disclosure [Text Block]	COMMITMENTS AND CONTINGENT LIABILITIES Guarantees Indemnifications In connection with acquisitions and divestitures as of September 30, 2020, the company has indemnified respective parties against certain liabilities that may arise in connection with these transactions and business activities prior to the completion of the transactions. The term of these indemnifications, which typically pertain to environmental, tax and product liabilities, is generally indefinite. In addition, the company indemnifies its duly elected or appointed directors and officers to the fullest extent permitted by Delaware law, against liabilities incurred as a result of their activities for the company, such as adverse judgments relating to litigation matters. If the indemnified party were to incur a liability or have a liability increase as a result of a successful claim, pursuant to the terms of the indemnification, the company would be required to reimburse the indemnified party. The maximum amount of potential future payments is generally unlimited. See pages 12 and 28 for additional information relating to the indemnification obligations under the Chemours Separation Agreement and the Corteva Separation Agreement. Obligations for Customers and Other Third Parties The company has directly guaranteed various debt obligations under agreements with third parties related to customers and other third parties. At September 30, 2020, December 31, 2019 and September 30, 2019, the company had directly guaranteed $96 million, $97 million, and $80 million, respectively, of such obligations. These amounts represent the maximum potential amount of future (undiscounted) payments that the company could be required to make under the guarantees in the event of default by the guaranteed party. Of the total maximum future payments at September 30, 2020, less than $1 million had terms greater than a year. The maximum future payments include $20 million, $16 million, and $11 million of guarantees related to the various factoring agreements that the company enters into with third-party financial institutions to sell its trade receivables at September 30, 2020, December 31, 2019 and September 30, 2019, respectively. See Note 10 - Accounts and Notes Receivable, Net, for additional information. The maximum future payments also include agreements with lenders to establish programs that provide financing for select customers. The terms of the guarantees are equivalent to the terms of the customer loans that are primarily made to finance customer invoices. The total amounts owed from customers to the lenders relating to these agreements was $637 million, $27 million and $596 million at September 30, 2020, December 31, 2019 and September 30, 2019, respectively. The company assesses the payment/performance risk by assigning default rates based on the duration of the guarantees. These default rates are assigned based on the external credit rating of the counterparty or through internal credit analysis and historical default history for counterparties that do not have published credit ratings. For counterparties without an external rating or available credit history, a cumulative average default rate is used. Litigation The company is subject to various legal proceedings, including, but not limited to, product liability, intellectual property, antitrust, commercial, property damage, personal injury, environmental and regulatory matters arising out of the normal course of its current businesses or legacy EID businesses unrelated to Corteva’s current businesses but allocated to Corteva as part of the separation of Corteva from DuPont. It is not possible to predict the outcome of these various proceedings. Although considerable uncertainty exists, management does not anticipate that the ultimate disposition of these matters will have a material adverse effect on the company's results of operations, consolidated financial position or liquidity. However, the ultimate liabilities could be material to results of operations and the cash flows in the period recognized. Indemnifications under Separation Agreements The company has entered into various agreements where the company is indemnified for certain liabilities. In connection with the recognition of liabilities related to these matters, the company records an indemnification asset when recovery is deemed probable. See Note 3 - Divestitures and Other Transactions, for additional information related to indemnifications. Chemours/Performance Chemicals On July 1, 2015, EID completed the separation of its Performance Chemicals segment through the spin-off of all of the issued and outstanding stock of The Chemours Company (the "Chemours Separation"). In connection with the Chemours Separation, EID and The Chemours Company ("Chemours") entered into a Separation Agreement (the "Chemours Separation Agreement"). Pursuant to the Chemours Separation Agreement and the amendment to the Chemours Separation Agreement, Chemours indemnifies the company against certain litigation, environmental, workers' compensation and other liabilities that arose prior to the distribution. The term of this indemnification is generally indefinite and includes defense costs and expenses, as well as monetary and non-monetary settlements and judgments. Concurrent with the MDL Settlement (as discussed below), EID and Chemours amended the Chemours Separation Agreement to provide for a limited sharing of potential future PFOA liabilities for five years, which began on July 6, 2017. During the five years, Chemours will annually pay the first $25 million of future PFOA liabilities and, if that amount is exceeded, EID will pay any excess amount up to the next $25 million, with Chemours annually bearing any excess liabilities above that amount. At the end of the five years, this limited sharing agreement will expire, and Chemours’ indemnification obligations under the Chemours Separation Agreement will continue unchanged. As part of this amendment, Chemours also agreed that it would not contest its liability for PFOA liabilities on the basis of certain ostensible defenses it had previously raised, including defenses relating to punitive damages, and would waive any such defenses with respect to PFOA liabilities. Chemours has, however, retained defenses as to whether any particular PFOA claim is within the scope of the indemnification provisions of the Chemours Separation Agreement. There have been no charges incurred by the company under this amendment through September 30, 2020. On May 13, 2019, Chemours filed a complaint in the Delaware Court of Chancery ("Chancery Court") against DuPont, Corteva, and EID alleging, among other things, that the litigation and environmental liabilities allocated to Chemours under the Chemours Separation Agreement were underestimated and asking that the Court either limit the amount of Chemours’ indemnification obligations or, alternatively, order the return of the $3.91 billion dividend Chemours paid to EID prior to its separation. On June 3, 2019, the defendants moved to dismiss the complaint on the grounds that the Chemours Separation Agreement requires arbitration of all disputes relating to that agreement. On March 30, 2020, the Chancery Court granted the motion to dismiss made by DuPont, Corteva, and EID. Chemours filed its appeal of the Chancery Court's decision and oral argument before the Delaware Supreme Court en Banc is scheduled for December 2, 2020. An arbitration of the indemnification matters is ongoing and proceeding in parallel with Chemours’ appeal of the Chancery Court decision. On October 13, 2020, the arbitration panel affirmed its jurisdiction to determine the arbitrability of the disputes and ruled that the disputes are arbitrable rejecting Chemours claims to the contrary. The arbitration is currently scheduled to begin June 2021. The company believes the probability of liability with respect to Chemours' suit continues to be remote. For additional information regarding environmental indemnification, see discussion on page 31. At September 30, 2020, the indemnification assets pursuant to the Chemours Separation Agreement are $65 million within accounts and notes receivable - net and $274 million within other assets along with the corresponding liabilities of $65 million within accrued and other current liabilities and $274 million within other noncurrent obligations in the interim Condensed Consolidated Balance Sheet. Corteva Separation Agreement On April 1, 2019, in connection with the Dow Distribution, Corteva, DuPont and Dow entered into the Corteva Separation Agreement, the Tax Matters Agreement, the Employee Matters Agreement, and certain other agreements (collectively, the “Corteva Separation Agreements”). The Corteva Separation Agreements allocate among Corteva, DuPont and Dow certain liabilities and obligations among the parties and provides for indemnification obligation among the parties. Under the Corteva Separation Agreements, DuPont will indemnify Corteva against certain litigation, environmental, workers' compensation and other liabilities that arose prior to the Corteva Distribution and (ii) Dow indemnifies Corteva against certain litigation and other liabilities that relate to the Historical Dow business, but were transferred over as part of DAS, and Corteva indemnifies DuPont and Dow for certain liabilities. The term of this indemnification is generally indefinite with exceptions, and includes defense costs and expenses, as well as monetary and non-monetary settlements and judgments. See Note 3 - Divestitures and Other Transactions, for additional information relating to the Separation. DuPont Under the Corteva Separation Agreement, certain legacy EID liabilities from discontinued and/or divested operations and businesses of EID (including Performance Chemicals) (a “stray liability”) were allocated to Corteva or DuPont. For those stray liabilities allocated to Corteva (which may include a specified amount of liability associated with that liability), Corteva is responsible for liabilities in an amount up to that specified amount plus an additional $200 million and, for those stray liabilities allocated to DuPont (which may include a specified amount of liability associated with that liability), DuPont is responsible for liabilities up to a specified amount plus an additional $200 million. Once each company has met the $200 million threshold, Corteva and DuPont will share future liabilities proportionally on the basis of 29% and 71%, respectively; provided, however, that for PFAS, DuPont will manage such liabilities with Corteva and DuPont sharing the costs on a 50% - 50% basis starting from $1 and up to $300 million (with such amount, up to $150 million, to be credited to each company’s $200 million threshold) and once the $300 million threshold is met, then the companies will share proportionally on the basis of 29% and 71% respectively, subject to a $1 million de minimis requirement. Litigation related to legacy EID businesses unrelated to Corteva’s current businesses While it is reasonably possible that the company could incur liabilities related to the litigation related to legacy EID businesses, unrelated to Corteva's current business, as described below, any such liabilities are not expected to be material. PFAS, PFOA, PFOS and Other Related Liabilities For purposes of this report, the term PFOA means collectively perfluorooctanoic acid and its salts, including the ammonium salt and does not distinguish between the two forms, and PFAS, which means per- and polyfluoroalkyl substances, including PFOA, PFOS (perfluorooctanesulfonic acid), GenX and other perfluorinated chemicals and compounds ("PFCs"). EID is a party to various legal proceedings relating to the use of PFOA by its former Performance Chemicals segment. While it is reasonably possible that EID could incur liabilities related to PFOA in excess of amounts accrued, any such liabilities are not expected to be material. As discussed, EID is indemnified by Chemours under the Chemours Separation Agreement, as amended. The company has recorded a liability of $21 million and an indemnification asset of $21 million at September 30, 2020, related to testing drinking water in and around certain former EID sites and offering treatment or an alternative supply of drinking water if tests indicate the presence of PFOA in drinking water at or greater than the national health advisory level established from time to time by the EPA. Leach Settlement and MDL Settlement EID has residual liabilities under its 2004 settlement of a West Virginia state court class action, Leach v. EID, which alleged that PFOA from EID’s former Washington Works facility had contaminated area drinking water supplies and affected the health of area residents. The settlement class has about 80,000 members. In addition to relief that was provided to class members years ago, the settlement requires EID to continue providing PFOA water treatment to six area water districts and private well users and to fund, through an escrow account, up to $235 million for a medical monitoring program for eligible class members. As of September 30, 2020, approximately $2 million had been disbursed from the account since its establishment in 2012 and the remaining balance is approximately $1 million. The Leach settlement permits class members to pursue personal injury claims for six health conditions (and no others) that an expert panel appointed under the settlement reported in 2012 had a “probable link” (as defined in the settlement) with PFOA: pregnancy-induced hypertension, including preeclampsia; kidney cancer; testicular cancer; thyroid disease; ulcerative colitis; and diagnosed high cholesterol. After the panel reported its findings, approximately 3,550 personal injury lawsuits were filed in federal and state courts in Ohio and West Virginia and consolidated in multi-district litigation in the U.S. District Court for the Southern District of Ohio (“MDL”). The MDL was settled in early 2017 for $670.7 million in cash, with Chemours and EID (without indemnification from Chemours) each paying half. Post-MDL Settlement PFOA Personal Injury Claims The MDL settlement did not resolve claims of plaintiffs who did not have claims in the MDL or whose claims are based on diseases first diagnosed after February 11, 2017. At September 30, 2020, approximately 58 lawsuits were pending, and another 33 threatened, alleging personal injury, mostly kidney or testicular cancer, from exposure to PFOA through air or water, with nearly all part of the MDL or were not filed on behalf of Leach class members. The first two trials concluded in February 2020. The first trial, a kidney cancer case, resulted in a hung jury, while the second, a testicular cancer case, resulted in a jury verdict of $40 million in compensatory damages and $10 million for loss of consortium. Following entry of the judgment by the court, EID intends to file post-trial motions to reduce the verdict, and to appeal the verdict on the basis of procedural and substantive legal errors made by the trial court. EID believes the merits of the appeal will be successful in reducing the jury verdict or eliminating its liability, in whole or part. Six additional cases are expected to begin trials in 2021. Other PFOA Matters EID is a party to other PFOA lawsuits that do not involve claims for personal injury. Chemours, pursuant to the Chemours Separation Agreement, is generally defending and indemnifying, with reservation, EID but Chemours has refused the tender of Corteva, Inc.'s defense in the limited actions in which Corteva, Inc. has been named. Chemours has refused to indemnify Corteva, Inc. and EID against any fraudulent conveyance claims associated with these matters. Corteva believes that Chemours is obligated to indemnify Corteva, Inc. under the Chemours Separation Agreement. New York . EID is a defendant in about 50 lawsuits, including a putative class action, brought by persons who live in and around Hoosick Falls, New York. These lawsuits assert claims for medical monitoring and property damage based on alleged PFOA releases from manufacturing facilities owned and operated by co-defendants in Hoosick Falls and allege that EID and 3M supplied some of the materials used at these facilities. EID is also one of more than ten defendants in a lawsuit brought by the Town of East Hampton, New York alleging PFOA and PFOS contamination of the town’s well water. Additionally, EID, along with 3M, Chemours and Dyneon, have been named defendants in complaints filed by eight water districts in Nassau County, New York alleging that the drinking water they provide to customers is contaminated with PFAS and seeking reimbursement for clean-up costs. The water district complaints also include allegations of fraudulent transfer. New Jersey . At September 30, 2020, two lawsuits were pending, one brought by a local water utility and the second a putative class action, against EID alleging that PFOA from EID’s former Chambers Works facility contaminated drinking water sources. The putative class action was voluntarily dismissed without prejudice by the plaintiff. In late March of 2019, the New Jersey State Attorney General filed four lawsuits against EID, Chemours, 3M and others alleging that operations at and discharges from former EID sites in New Jersey (Chambers Works, Pompton Lakes, Parlin and Repauno) damaged the State’s natural resources. Two of these lawsuits (those involving the Chambers Works and Parlin sites) allege contamination from PFAS. The Ridgewood Water District in New Jersey filed suit in the first quarter 2019 against EID, 3M, Chemours, and Dyneon alleging losses related to the investigation, remediation and monitoring of polyfluorinated surfactants, including PFOA, in water supplies. DuPont and Corteva were subsequently added as defendants to these lawsuits. Alabama / Others . EID is one of more than thirty defendants in a lawsuit by the Alabama water utility alleging contamination from PFCs, including PFOA, used by co-defendant carpet manufacturers to make their products more stain and grease resistant. In addition, the states of Michigan, New Hampshire, South Dakota, and Vermont recently filed lawsuits against EID, Chemours, 3M and others, claiming, among other things, PFC (including PFOA) contamination of groundwater and drinking water. The complaints seek reimbursement for past and future costs to investigate and remediate the alleged contamination and compensation for the loss of value and use of the state’s natural resources. Ohio . EID is a defendant in three lawsuits: an action by the State of Ohio based on alleged damage to natural resources, a putative nationwide class action brought on behalf of anyone who has detectable levels of PFAS in their blood serum, and an action by the City of Dayton claiming losses related to the investigation, remediation and monitoring of PFAS in water supplies. Aqueous Firefighting Foam s. Approximately 690 cases have been filed against 3M and other defendants, including EID and Chemours, and more recently also including Corteva and DuPont, alleging PFOS or PFOA contamination of soil and groundwater from the use of aqueous firefighting foams. Most of those cases claim some form of property damage and seek to recover the costs of responding to this contamination and damages for the loss of use and enjoyment of property and diminution in value. Most of these cases have been transferred to a multidistrict litigation proceeding in federal district court in South Carolina. Approximately 630 of these cases were filed on behalf of firefighters who allege personal injuries (primarily, thyroid disease and kidney, testicular and other cancers) as a result of aqueous firefighting foams. Most of these recent cases assert claims that the EID and Chemours separation constituted a fraudulent conveyance. While Chemours is defending EID for all claims except those for fraudulent conveyance, it has declined defense and indemnity to Corteva on all claims. EID did not make firefighting foams, PFOS, or PFOS products. While EID made surfactants and intermediaries that some manufacturers used in making foams, which may have contained PFOA as an unintended byproduct or an impurity, EID’s products were not formulated with PFOA, nor was PFOA an ingredient of these products. EID has never made or sold PFOA as a commercial product. Fayetteville Works Facility, North Carolina Prior to the separation of Chemours, EID introduced GenX as a polymerization processing aid and a replacement for PFOA at the Fayetteville Works facility in Bladen County, North Carolina. The facility is now owned and operated by Chemours, which continues to manufacture and use GenX. At September 30, 2020, several actions are pending in federal court against Chemours and EID relating to PFC discharges from the Fayetteville Works facility. One of these is a consolidated putative class action that asserts claims for medical monitoring and property damage on behalf of putative classes of property owners and residents in areas near or who draw drinking water from the Cape Fear River. Another action is a consolidated action brought by various North Carolina water authorities, including the Cape Fear Public Utility Authority and Brunswick County, that seek actual and punitive damages as well as injunctive relief. In another action over 200 property owners near the Fayetteville Works facility filed a complaint against Chemours and EID in May 2020. The plaintiffs seek compensatory and punitive damages for their claims of private nuisance, trespass, and negligence allegedly caused by release of PFAS. In addition to the federal court actions, there is an action on behalf of about 100 plaintiffs who own wells and property near the Fayetteville Works facility. The plaintiffs seek damages for nuisance allegedly caused by releases of certain PFCs from the site. The plaintiffs’ claims for medical monitoring, punitive damages, public nuisance, trespass, unjust enrichment, failure to warn, and negligent manufacture have all been dismissed. The company has an indemnification claim against Chemours with respect to current and future inquiries and claims, including lawsuits, related to the foregoing. At September 30, 2020, Chemours, with reservations, is defending and indemnifying EID in the pending civil actions. Environmental Accruals for environmental matters are recorded when it is probable that a liability has been incurred and the amount of the liability can be reasonably estimated based on current law and existing technologies. At September 30, 2020, the company had accrued obligations of $342 million for probable environmental remediation and restoration costs, including $52 million for the remediation of Superfund sites. These obligations are included in accrued and other current liabilities and other noncurrent obligations in the interim Condensed Consolidated Balance Sheet. This is management’s best estimate of the costs for remediation and restoration with respect to environmental matters for which the company has accrued liabilities, although it is reasonably possible that the ultimate cost with respect to these particular matters could range up to $610 million above the amount accrued at September 30, 2020. Consequently, it is reasonably possible that environmental remediation and restoration costs in excess of amounts accrued could have a material impact on the company’s results of operations, financial condition and cash flows. Inherent uncertainties exist in these estimates primarily due to unknown conditions, changing governmental regulations and legal standards regarding liability, and emerging remediation technologies for handling site remediation and restoration. For a discussion of the allocation of environmental liabilities under the Chemours Separation Agreement and the Corteva Separation Agreement, see the previous discussion on page 28. The above noted $342 million accrued obligations includes the following: As of September 30, 2020 (In millions) Indemnification Asset Accrual balance 3 Potential exposure above amount accrued 3 Environmental Remediation Stray Liabilities Chemours related obligations - subject to indemnity 1,2 $ 158 $ 158 $ 284 Other discontinued or divested businesses obligations 1 83 219 Environmental remediation liabilities primarily related to DuPont - subject to indemnity from DuPont 2 34 34 62 Environmental remediation liabilities not subject to indemnity 67 45 Total $ 192 $ 342 $ 610 1. Represents liabilities that are subject the $200 million thresholds and sharing arrangements as discussed on page 28, under Corteva Separation Agreement. 2. The company has recorded an indemnification asset related to these accruals, including $30 million related to the Superfund sites. 3. Accrual balance represents management’s best estimate of the costs of remediation and restoration, although it is reasonably possible that the potential exposure, as indicated, could range above the amounts accrued, as there are inherent uncertainties in these estimates.

Stockholders' Equity

Stockholders' Equity	9 Months Ended
	Sep. 30, 2020
Equity [Abstract]
Stockholders' Equity Note Disclosure [Text Block]	STOCKHOLDERS' EQUITY Common Stock On June 1, 2019, Corteva, Inc.'s common stock was distributed to DowDuPont stockholders by way of a pro rata distribution . Each DowDuPont stockholder received one share of Corteva, Inc. common stock for every three shares of DowDuPont common stock held at the close of business on May 24, 2019, the record date of distribution. Corteva, Inc.'s common stock began trading the "regular way" under the ticker symbol "CTVA" on June 3, 2019, the first business day after June 1, 2019. The number of Corteva, Inc. common shares issued on June 1, 2019 was 748,815,000 (par value of $0.01 per share). Information related to the Corteva Distribution and its effect on the company's financial statements are discussed throughout these Notes to the interim Consolidated Financial Statements. Set forth below is a reconciliation of common stock share activity: Shares of common stock Issued Balance January 1, 2020 748,577,000 Issued 1,940,000 Repurchased and retired (3,025,000) Balance September 30, 2020 747,492,000 Share Buyback Plan On June 26, 2019, Corteva, Inc. announced that the Board of Directors of Corteva, Inc. authorized a $1 billion share repurchase program to purchase Corteva, Inc.'s common stock, par value $0.01 per share, without an expiration date. The timing, price and volume of purchases will be based on market conditions, relevant securities laws and other factors. During the three months ended September 30, 2020, the company purchased and retired 1,160,000 shares in the open market for a total cost of $33 million. During the nine months ended September 30, 2020, the company purchased and retired 3,025,000 shares in the open market for a total cost of $83 million. During the three months ended September 30, 2019, the company purchased and retired 824,000 shares in the open market for a total cost of $25 million. Shares repurchased pursuant to Corteva's share buyback plan are immediately retired upon purchase. Repurchased common stock is reflected as a reduction of stockholders' equity. The company's accounting policy related to its share repurchases is to reduce its common stock based on the par value of the shares and to reduce its retained earnings for the excess of the repurchase price over the par value. When Corteva has an accumulated deficit balance, the excess over the par value is applied to additional paid-in capital. When Corteva has retained earnings, the excess is charged entirely to retained earnings. Noncontrolling Interest In June 2020, the company completed the acquisition of the remaining 46.5 percent interest in the Phytogen Seed Company, LLC joint venture from J. G. Boswell Company. As the purchase of the remaining interest did not result in a change of control, the difference between the carrying value of the noncontrolling interest and the consideration paid, net of taxes was recorded within equity. Corteva, Inc. owns 100% of the outstanding common shares of EID. However, EID has preferred stock outstanding to third parties which is accounted for as a non-controlling interest in Corteva's interim Condensed Consolidated Balance Sheets. Each share of EID Preferred Stock - $4.50 Series and EID Preferred Stock - $3.50 Series issued and outstanding at the effective date of the Corteva Distribution remains issued and outstanding as to EID and was unaffected by the Corteva Distribution. Below is a summary of the EID Preferred Stock at September 30, 2020, December 31, 2019, and September 30, 2019, which is classified as noncontrolling interests in Corteva's interim Condensed Consolidated Balance Sheets. Shares in thousands Number of Shares Authorized 23,000 $4.50 Series, callable at $120 1,673 $3.50 Series, callable at $102 700 Other Comprehensive (Loss) Income The changes and after-tax balances of components comprising accumulated other comprehensive loss are summarized below: (In millions) Cumulative Translation Adjustment 1 Derivative Instruments Pension Benefit Plans Other Benefit Plans Total 2019 Balance January 1, 2019 $ (2,793) $ (26) $ (620) $ 79 $ (3,360) Other comprehensive (loss) income before reclassifications (471) 11 9 (85) (536) Amounts reclassified from accumulated other comprehensive loss — 12 4 (1) 15 Net other comprehensive (loss) income (471) 23 13 (86) (521) Impact of Internal Reorganizations 1,123 — 91 — 1,214 Balance September 30, 2019 $ (2,141) $ (3) $ (516) $ (7) $ (2,667) 2020 Balance January 1, 2020 $ (1,944) $ 2 $ (1,247) $ (81) $ (3,270) Other comprehensive (loss) income before reclassifications (507) (23) (10) 2 (538) Amounts reclassified from accumulated other comprehensive loss — 7 4 1 12 Net other comprehensive (loss) income (507) (16) (6) 3 (526) Balance September 30, 2020 $ (2,451) $ (14) $ (1,253) $ (78) $ (3,796) 1. The cumulative translation adjustment loss for the nine months ended September 30, 2019 was primarily driven by the strengthening of the USD against the Brazilian Real (“BRL”), the European Euro (“EUR”) and the South African Rand (“ZAR”). The cumulative translation adjustment loss for the nine months ended September 30, 2020 was primarily driven by strengthening of the USD against the Brazilian Real ("BRL") and the South African Rand ("ZAR"). The tax benefit (expense) on the net activity related to each component of other comprehensive (loss) income was as follows: (In millions) Three Months Ended Nine Months Ended September 30, 2020 2019 2020 2019 Derivative instruments $ 4 $ 1 $ 6 $ (6) Pension benefit plans - net — — (3) 4 Other benefit plans - net — — — 29 (Provision for) benefit from income taxes related to other comprehensive (loss) income items $ 4 $ 1 $ 3 $ 27 A summary of the reclassifications out of accumulated other comprehensive loss is provided as follows: (In millions) Three Months Ended Nine Months Ended September 30, 2020 2019 2020 2019 Derivative Instruments 1 : $ (22) $ 1 $ 13 $ 13 Tax benefit 2 3 — (6) (1) After-tax $ (19) $ 1 $ 7 $ 12 Amortization of pension benefit plans: Prior service benefit 3 $ — $ — $ (1) $ — Actuarial losses 3 1 1 3 2 Settlement loss 3 — 1 3 2 Total before tax 1 2 5 4 Tax benefit 2 — — (1) — After-tax $ 1 $ 2 $ 4 $ 4 Amortization of other benefit plans: Actuarial gains 3 $ 1 $ — $ 1 $ (1) Total before tax 1 — 1 (1) Tax benefit 2 — — — — After-tax $ 1 $ — $ 1 $ (1) Total reclassifications for the period, after-tax $ (17) $ 3 $ 12 $ 15 1. Reflected in cost of goods sold. 2. Reflected in provision for (benefit from) income taxes from continuing operations.

Pension Plans and Other Post Em

Pension Plans and Other Post Employment Benefit Plans	9 Months Ended
	Sep. 30, 2020
Retirement Benefits [Abstract]
Pension and Other Postretirement Benefits Disclosure [Text Block]	PENSION PLANS AND OTHER POST EMPLOYMENT BENEFITS In connection with the Corteva Distribution, the company retained the benefit obligations relating to EID's principal U.S. pension plan, several other U.S. and non-U.S. pension plans and other post employment benefit plans ("OPEB"). Corteva entered into an employee matters agreement with DuPont which provides that employees of DuPont no longer participate in the benefits sponsored or maintained by the company as of the date of the Corteva Distribution and transferred certain EID's pension and OPEB obligations and associated assets to DuPont. As a result of the transfer, about $5.8 billion unfunded obligations of the pension and OPEB plans remained with Corteva, of which $319 million was supported by funding under the Trust agreement. As a result of the Corteva Distribution, the company re-measured OPEB plans as of June 1, 2019. In connection with the re-measurement, the company updated the discount rate assumed at December 31, 2018 from 4.23% to 3.64%. The re-measurement resulted in an increase of $114 million to the company’s OPEB benefit obligations with a corresponding loss effect within other comprehensive income (loss) for the nine months ended September 30, 2019. The following sets forth the components of the company's net periodic benefit (credit) cost for defined benefit pension plans and other post employment benefits: Three Months Ended Nine Months Ended September 30, (In millions) 2020 2019 2020 2019 Defined Benefit Pension Plans: Service cost $ 6 $ 5 $ 19 $ 37 Interest cost 139 185 420 592 Expected return on plan assets (250) (253) (750) (839) Amortization of unrecognized loss 1 — 3 2 Amortization of prior service benefit — — (1) — Settlement/curtailment loss — 1 3 — Net periodic benefit credit - Total $ (104) $ (62) $ (306) $ (208) Less: Discontinued operations 1 — — — (17) Net periodic benefit credit - Continuing operations $ (104) $ (62) $ (306) $ (191) Other Post Employment Benefits: Service cost $ — $ — $ 1 $ 3 Interest cost 16 20 49 65 Amortization of unrecognized loss (gain) 1 — 1 (1) Net periodic benefit cost - Continuing operations $ 17 $ 20 $ 51 $ 67

Financial Instruments

Financial Instruments	9 Months Ended
	Sep. 30, 2020
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Financial Instruments Disclosure [Text Block]	FINANCIAL INSTRUMENTS At September 30, 2020, the company had $1,986 million ($1,293 million and $1,568 million at December 31, 2019 and September 30, 2019, respectively) of held-to-maturity securities (primarily time deposits and money market funds) classified as cash equivalents and restricted cash equivalents, as these securities had maturities of three months or less at the time of purchase; and $152 million ($5 million and $117 million at December 31, 2019 and September 30, 2019, respectively) of held-to-maturity securities (primarily time deposits) classified as marketable securities as these securities had maturities of more than three months to less than one year at the time of purchase. The company’s investments in held-to-maturity securities are held at amortized cost, which approximates fair value. These securities are included in cash and cash equivalents, marketable securities, and other current assets in the interim Condensed Consolidated Balance Sheets. Derivative Instruments Objectives and Strategies for Holding Derivative Instruments In the ordinary course of business, the company enters into contractual arrangements (derivatives) to reduce its exposure to foreign currency and commodity price risks. The company has established a variety of derivative programs to be utilized for financial risk management. These programs reflect varying levels of exposure coverage and time horizons based on an assessment of risk. Derivative programs have procedures and controls and are approved by the Corporate Financial Risk Management Committee, consistent with the company's financial risk management policies and guidelines. Derivative instruments used are forwards, options, futures and swaps. The company has not designated any non-derivatives as hedging instruments. The company's financial risk management procedures also address counterparty credit approval, limits and routine exposure monitoring and reporting. The counterparties to these contractual arrangements are major financial institutions major commodity exchanges, and multinational grain exporters. The company is exposed to credit loss in the event of nonperformance by these counterparties. The company utilizes collateral support annex agreements with certain counterparties to limit its exposure to credit losses. The company anticipates performance by counterparties to these contracts and therefore no material loss is expected. Market and counterparty credit risks associated with these instruments are regularly reported to management. The notional amounts of the company's derivative instruments were as follows: Notional Amounts (In millions) September 30, 2020 December 31, 2019 September 30, 2019 Derivatives designated as hedging instruments: Foreign currency contracts $ 770 $ — $ — Commodity contracts $ 51 $ 570 $ 73 Derivatives not designated as hedging instruments: Foreign currency contracts $ 924 $ 582 $ 1,313 Foreign Currency Risk The company's objective in managing exposure to foreign currency fluctuations is to reduce earnings and cash flow volatility associated with foreign currency rate changes and to mitigate the exposure of certain investments in foreign subsidiaries against changes in the Euro/USD exchange rate. Accordingly, the company enters into various contracts that change in value as foreign exchange rates change to protect the value of its existing foreign currency-denominated assets, liabilities, commitments, investments and cash flows. The company uses foreign exchange contracts to offset its net exposures, by currency, related to the foreign currency denominated monetary assets and liabilities of its operations. The primary business objective of this hedging program is to maintain an approximately balanced position in foreign currencies so that exchange gains and losses resulting from exchange rate changes, after related tax effects, are minimized. The company also uses foreign currency exchange contracts to offset a portion of the company’s exposure to certain forecasted transactions as well as the translation of foreign currency-denominated earnings. The company also uses commodity contracts to offset risks associated with foreign currency devaluation in certain countries. Commodity Price Risk Commodity price risk management programs serve to reduce exposure to price fluctuations on purchases of inventory such as corn and soybeans. The company enters into over-the-counter and exchange-traded derivative commodity instruments to hedge the commodity price risk associated with agricultural commodity exposures. Derivatives Designated as Cash Flow Hedges Commodity Contracts The company enters into over-the-counter and exchange-traded derivative commodity instruments, including options, futures and swaps, to hedge the commodity price risk associated with agriculture commodity exposures. While each risk management program has a different time maturity period, most programs currently do not extend beyond the next two years. Cash flow hedge results are reclassified into earnings during the same period in which the related exposure impacts earnings. Reclassifications are made sooner if it appears that a forecasted transaction is not probable of occurring. The following table summarizes the after-tax effect of commodity contract cash flow hedges on accumulated other comprehensive loss: Three Months Ended Nine Months Ended September 30, (In millions) 2020 2019 2020 2019 Beginning balance $ (16) $ (3) $ 2 $ (26) Additions and revaluations of derivatives designated as cash flow hedges 10 (1) (34) 11 Clearance of hedge results to earnings (2) 1 24 12 Ending balance $ (8) $ (3) $ (8) $ (3) At September 30, 2020, an after-tax net loss of $9 million is expected to be reclassified from accumulated other comprehensive loss into earnings over the next twelve months. Foreign Currency Contracts The company enters into forward contracts to hedge the foreign currency risk associated with forecasted transactions within certain foreign subsidiaries. While each risk management program has a different time maturity period, most programs currently do not extend beyond the next two years. Cash flow hedge results are reclassified into earnings during the same period in which the related exposure impacts earnings. Reclassifications are made sooner if it appears that a forecasted transaction is not probable of occurring. The following table summarizes the after-tax effect of foreign currency cash flow hedges on accumulated other comprehensive loss: Three Months Ended Nine Months Ended September 30, (In millions) 2020 2020 Beginning balance $ 19 $ — Additions and revaluations of derivatives designated as cash flow hedges 4 23 Clearance of hedge results to earnings (17) (17) Ending balance $ 6 $ 6 At September 30, 2020, an after-tax net gain of $6 million is expected to be reclassified from accumulated other comprehensive loss into earnings over the next twelve months. Derivatives Designated as Net Investment Hedges Foreign Currency Contracts The company has designated €450 million of forward contracts to exchange EUR as net investment hedges. The purpose of these forward contracts is to mitigate FX exposure related to a portion of the company’s Euro net investments in certain foreign subsidiaries against changes in Euro/USD exchange rates. These hedges will expire and be settled in 2023, unless terminated early at the discretion of the company. The company elected to apply the spot method in testing for effectiveness of the hedging relationship. Derivatives not Designated in Hedging Relationships Foreign Currency Contracts The company uses foreign exchange contracts to reduce its net exposure, by currency, related to foreign currency-denominated monetary assets and liabilities of its operations so that exchange gains and losses resulting from exchange rate changes are minimized. The netting of such exposures precludes the use of hedge accounting; however, the required revaluation of the forward contracts and the associated foreign currency-denominated monetary assets and liabilities intends to achieve a minimal earnings impact, after taxes. The company also uses foreign currency exchange contracts to offset a portion of the company’s exposure to the translation of certain foreign currency-denominated earnings so that gains and losses on the contracts offset changes in the USD value of the related foreign currency-denominated earnings over the relevant aggregate period. Commodity Contracts The company utilizes options, futures and swaps that are not designated as hedging instruments to reduce exposure to commodity price fluctuations on purchases of inventory such as corn and soybeans. The company uses forward agreements, with durations less than one year, to buy and sell USD priced commodities in order to reduce its exposure to currency devaluation for a portion of its local currency cash balances. Counterparties to the forward sales agreements are multinational grain exporters and subject to the company’s financial risk management procedures. Fair Value of Derivative Instruments Asset and liability derivatives subject to an enforceable master netting arrangement with the same counterparty are presented on a net basis in the interim Condensed Consolidated Balance Sheets. The presentation of the company's derivative assets and liabilities is as follows: September 30, 2020 (In millions) Balance Sheet Location Gross Counterparty and Cash Collateral Netting 1 Net Amounts Included in the Condensed Consolidated Balance Sheet Asset derivatives: Derivatives designated as hedging instruments: Foreign currency contracts Other current assets $ 24 $ — $ 24 Derivatives not designated as hedging instruments: Foreign currency contracts Other current assets 101 $ (75) $ 26 Commodity contracts Other current assets 1 — $ 1 Total asset derivatives $ 126 $ (75) $ 51 Liability derivatives: Derivatives designated as hedging instruments: Foreign currency contracts Accrued and other current liabilities 12 — 12 Derivatives not designated as hedging instruments: Foreign currency contracts Accrued and other current liabilities 84 $ (69) $ 15 Commodity contracts Accrued and other current liabilities 1 — $ 1 Total liability derivatives $ 97 $ (69) $ 28 December 31, 2019 (In millions) Balance Sheet Location Gross Counterparty and Cash Collateral Netting 1 Net Amounts Included in the Condensed Consolidated Balance Sheet Asset derivatives: Derivatives not designated as hedging instruments: Foreign currency contracts Other current assets $ 25 $ (18) $ 7 Total asset derivatives $ 25 $ (18) $ 7 Liability derivatives: Derivatives not designated as hedging instruments: Foreign currency contracts Accrued and other current liabilities $ 43 $ (16) $ 27 Total liability derivatives $ 43 $ (16) $ 27 September 30, 2019 (In millions) Balance Sheet Location Gross Counterparty and Cash Collateral Netting 1 Net Amounts Included in the Condensed Consolidated Balance Sheet Asset derivatives: Derivatives not designated as hedging instruments: Foreign currency contracts Other current assets $ 74 $ (6) $ 68 Total asset derivatives $ 74 $ (6) $ 68 Liability derivatives: Derivatives not designated as hedging instruments: Foreign currency contracts Accrued and other current liabilities $ 20 $ 7 $ 27 Total liability derivatives $ 20 $ 7 $ 27 1. Counterparty and cash collateral amounts represent the estimated net settlement amount when applying netting and set-off rights included in master netting arrangements between the company and its counterparties and the payable or receivable for cash collateral held or placed with the same counterparty. Effect of Derivative Instruments Amount of (Loss) Gain Recognized in OCI 1 - Pre-Tax Three Months Ended Nine Months Ended (In millions) 2020 2019 2020 2019 Derivatives designated as hedging instruments: Net investment hedges: Foreign currency contracts $ (20) $ — $ (16) $ — Cash flow hedges: Foreign currency contracts 4 — 27 — Commodity contracts 14 (2) (46) 16 Total derivatives designated as hedging instruments (2) (2) (35) 16 Total derivatives $ (2) $ (2) $ (35) $ 16 1. OCI is defined as other comprehensive income (loss). Amount of Gain (Loss) Recognized in Income - Pre-Tax 1 (In millions) Three Months Ended Nine Months Ended 2020 2019 2020 2019 Derivatives designated as hedging instruments: Cash flow hedges: Foreign currency contracts 2 $ 19 $ — $ 19 $ — Commodity contracts 2 3 $ (1) (32) $ (13) Total derivatives designated as hedging instruments 22 (1) (13) (13) Derivatives not designated as hedging instruments: Foreign currency contracts 3 (6) 55 173 (11) Foreign currency contracts 2 3 — 19 — Commodity contracts 2 — 1 9 9 Total derivatives not designated as hedging instruments (3) 56 201 (2) Total derivatives $ 19 $ 55 $ 188 $ (15) 1. For cash flow hedges, this represents the portion of the gain (loss) reclassified from accumulated OCI into income during the period. 2. Recorded in cost of goods sold.

Fair Value Measurements

Fair Value Measurements	9 Months Ended
	Sep. 30, 2020
Fair Value Disclosures [Abstract]
Fair Value Disclosures [Text Block]	FAIR VALUE MEASUREMENTS The following tables summarize the basis used to measure certain assets and liabilities at fair value on a recurring basis: September 30, 2020 Significant Other Observable Inputs (Level 2) (In millions) Assets at fair value: Cash equivalents and restricted cash equivalents 1 $ 1,986 Marketable securities 152 Derivatives relating to: 2 Foreign currency 125 Commodity contracts 1 Total assets at fair value $ 2,264 Liabilities at fair value: Derivatives relating to: 2 Foreign currency 96 Commodity contracts 1 Total liabilities at fair value $ 97 December 31, 2019 Significant Other Observable Inputs (Level 2) (In millions) Assets at fair value: Cash equivalents and restricted cash equivalents 1 $ 1,293 Marketable securities 5 Derivatives relating to: 2 Foreign currency 25 Total assets at fair value $ 1,323 Liabilities at fair value: Derivatives relating to: 2 Foreign currency 43 Total liabilities at fair value $ 43 September 30, 2019 Significant Other Observable Inputs (Level 2) (In millions) Assets at fair value: Cash equivalents and restricted cash equivalents 1 $ 1,568 Marketable securities 117 Derivatives relating to: 2 Foreign currency 74 Total assets at fair value $ 1,759 Liabilities at fair value: Derivatives relating to: 2 Foreign currency 20 Total liabilities at fair value $ 20 1. Time deposits included in cash and cash equivalents and money market funds included in other current assets in the interim Condensed Consolidated Balance Sheets are held at amortized cost, which approximates fair value. 2. See Note 17 - Financial Instruments for the classification of derivatives in the interim Condensed Consolidated Balance Sheets. Fair Value Measurements on a Nonrecurring Basis The following table summarizes the bases used to measure certain assets at fair value on a nonrecurring basis: Basis of Fair Value Measurements on a Nonrecurring Basis at September 30 (In millions) Significant Other Unobservable Inputs (Level 3) Total Losses 2019 Assets at fair value: Developed technology — (1) Other intangible assets — (6) IPR&D — (47) With the exception of the developed technology, other intangible assets, and IPR&D non-cash impairment charges, there were no other non-recurring fair value adjustments recorded during the three and nine months ended September 30, 2020 and 2019. See Note 5 - Restructuring and Asset Related Charges - Net for further discussion of these fair value measurements.

Segment Reporting (Notes)

Segment Reporting (Notes)	9 Months Ended
	Sep. 30, 2020
Segment Reporting [Abstract]
Segment Reporting Disclosure [Text Block]	Segment operating EBITDA is the primary measure of segment profitability used by Corteva’s chief operating decision maker ("CODM"). The company defines segment operating EBITDA as earnings (i.e., income from continuing operations before income taxes) before interest, depreciation, amortization, corporate expenses, non-operating (benefits) costs - net and foreign exchange gains (losses), net, excluding the impact of significant items. Non-operating (benefits) costs - net consists of non-operating pension and other post-employment benefit (OPEB) costs, tax indemnification adjustments and environmental remediation and legal costs associated with legacy EID businesses and sites. Tax indemnification adjustments relate to changes in indemnification balances, as a result of the application of the terms of the Tax Matters Agreement, between Corteva and Dow and/or DuPont that are recorded by the company as pre-tax income or expense. For purposes of the nine months ended September 30, 2019, segment operating EBITDA is calculated on a pro forma basis, as this is the manner in which the CODM assesses performance and allocates resources. Pro forma adjustments used in the calculation of pro forma segment operating EBITDA for the nine months ended September 30, 2019 were determined in accordance with Article 11 of Regulation S-X. These adjustments give effect to the Merger, the debt retirement transactions related to paying off or retiring portions of EID’s existing debt liabilities (refer to the company’s Annual Report on Form 10-K for the year ended December 31, 2019 for further information), and the separation and distribution to DowDuPont stockholders of all the outstanding shares of Corteva common stock as if they had been consummated on January 1, 2016. As of and for the Three Months Ended September 30, (In millions) Seed Crop Protection Total 2020 Net sales $ 523 $ 1,340 $ 1,863 Segment operating EBITDA $ (282) $ 130 $ (152) Segment assets 1 $ 24,372 $ 12,593 $ 36,965 2019 Net sales $ 681 $ 1,230 $ 1,911 Segment operating EBITDA $ (295) $ 119 $ (176) Segment assets 1 $ 26,021 $ 13,331 $ 39,352 1. Segment assets at December 31, 2019 were $25,387 million and $13,492 million for Seed and Crop Protection, respectively. For the Nine Months Ended September 30, (In millions) Seed Crop Protection Total 2020 Net sales $ 6,516 $ 4,494 $ 11,010 Segment operating EBITDA $ 1,255 $ 677 $ 1,932 2019 Net sales $ 6,347 $ 4,516 $ 10,863 Pro forma segment operating EBITDA $ 1,066 $ 789 $ 1,855 Reconciliation to interim Consolidated Financial Statements (Loss) income from continuing operations after income taxes to segment operating EBITDA (In millions) Three Months Ended Nine Months Ended 2020 2019 2020 2019 (Loss) income from continuing operations after income taxes $ (390) $ (527) $ 657 $ (228) (Benefit from) provision for income taxes on continuing operations (117) (104) 88 99 (Loss) income from continuing operations before income taxes (507) (631) 745 (129) Depreciation and amortization 285 226 868 711 Interest income (11) (13) (38) (46) Interest expense 11 19 35 112 Exchange losses (gains) - net 1 67 (22) 127 37 Non-operating benefits - net (73) (32) (237) (106) Significant items 49 246 351 886 Pro forma adjustments 298 Corporate expenses 27 31 81 92 Segment operating EBITDA 2 $ (152) $ (176) $ 1,932 $ 1,855 1. Excludes a $(33) million foreign exchange loss for the three and nine months ended September 30, 2019 associated with the devaluation of the Argentine peso, as it is included within significant items. See Note 7 - Supplementary Information for additional information 2. The nine months ended September 30, 2019 is presented on a pro forma basis, prepared in accordance with Article 11 of Regulation S-X.. Segment assets to total assets (in millions) September 30, 2020 December 31, 2019 September 30, 2019 Total segment assets $ 36,965 $ 38,879 $ 39,352 Corporate assets 4,725 3,518 3,883 Total assets $ 41,690 $ 42,397 $ 43,235 Significant Pre-tax Charges Not Included in Segment Operating EBITDA The three and nine months ended September 30, 2020 and 2019, respectively, included the following significant pre-tax charges which are excluded from segment operating EBITDA: (In millions) Seed Crop Protection Corporate Total For the Three Months Ended September 30, 2020 Restructuring and Asset Related Charges - Net 1 $ (9) $ (40) $ — $ (49) Total $ (9) $ (40) $ — $ (49) (In millions) Seed Crop Protection Corporate Total For the Three Months Ended September 30, 2019 Restructuring and Asset Related Charges - Net 1 $ (47) $ 1 $ — $ (46) Integration and Separation Costs 2 — — (152) (152) Amortization of inventory step up 3 (15) — — (15) Argentina currency devaluation 4 — — (33) (33) Total $ (62) $ 1 $ (185) $ (246) (In millions) Seed Crop Protection Corporate Total For the Nine Months Ended September 30, 2020 Restructuring and Asset Related Charges - Net 1 $ (154) $ (98) $ (46) $ (298) Loss on Divestiture 5 — (53) — (53) Total $ (154) $ (151) $ (46) $ (351) (In millions) Seed Crop Protection Corporate Total For the Nine Months Ended September 30, 2019 8 Restructuring and Asset Related Charges - Net 1 $ (123) $ (24) $ (20) $ (167) Integration and Separation Costs 2 — — (582) (582) Amortization of inventory step up 3 (67) — — (67) Loss on early extinguishment of debt 6 — — (13) (13) Argentina currency devaluation 4 — — (33) (33) Loss on Divestiture 7 (24) — — (24) Total $ (214) $ (24) $ (648) $ (886) 1. Includes Board approved restructuring plans and asset related charges as well as accelerated prepaid amortization expense. See Note 5 - Restructuring and Asset Related Charges - Net, for additional information. 2. Integration and separation costs include costs incurred to prepare for and close the Merger, post-Merger integration expenses, and costs incurred to prepare for the Internal Reorganizations. 3. Includes a charge related to the amortization of the inventory that was stepped up to fair value in connection with the Merger. 4. Includes a charge included in other income (expense) - net associated with remeasuring the company’s Argentine Peso net monetary assets, resulting from an unexpected August primary election result in Argentina. Throughout the three months ended September 30, 2019, the Argentine Peso dropped approximately a third of its value against the US dollar and in September of 2019, the country’s central bank announced new restrictions on foreign currency transactions. 5. Includes a loss recorded in other income - net related to the expected sale of the La Porte site. 6. Includes a loss on early extinguishment of debt related to the difference between the redemption price and the par value of the Make Whole Notes and Term Loan Facility, partially offset by the write-off of unamortized step-up related to the fair value step-up of EID's debt. 7. Includes a loss recorded in other income - net related to DAS’s sale of a joint venture related to synergy actions. 8. The nine months ended September 30, 2019 is presented on a pro forma basis, prepared in accordance with Article 11 of Regulation S-X.

EID - Basis of Presentation (No

EID - Basis of Presentation (Notes)	9 Months Ended
	Sep. 30, 2020
EID [Member]
Entity Information [Line Items]
Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block]	BASIS OF PRESENTATION As a result of the Business Realignment and the Internal Reorganization, Corteva, Inc. owns 100% of the outstanding common stock of EID. EID is a subsidiary of Corteva, Inc. and continues to be a reporting company, subject to the requirements of the Exchange Act. The primary differences between Corteva, Inc. and EID are outlined below: • Preferred Stock - EID has preferred stock outstanding to third parties which is accounted for as a non-controlling interest at the Corteva, Inc. level. Each share of EID Preferred Stock - $4.50 Series and EID Preferred Stock - $3.50 Series issued and outstanding at the effective date of the Corteva Distribution remains issued and outstanding as to EID and was unaffected by the Corteva Distribution. • Related Party Loan - EID engaged in a series of debt redemptions during the second quarter of 2019 that were partially funded through an intercompany loan from Corteva, Inc. This was eliminated in consolidation at the Corteva, Inc. level but remains on EID's financial statements at the standalone level (including the associated interest). • Capital Structure - At September 30, 2020, Corteva, Inc.'s capital structure consists of 747,492,000 issued shares of common stock, par value $0.01 per share. The accompanying footnotes relate to EID only, and not to Corteva, Inc., and are presented to show differences between EID and Corteva, Inc. For the footnotes listed below, refer to the following Corteva, Inc. footnotes: • Note 1 - Summary of Significant Accounting Policies - refer to page 10 of the Corteva, Inc. interim Consolidated Financial Statements • Note 2 - Recent Accounting Guidance - refer to page 11 of the Corteva, Inc. interim Consolidated Financial Statements • Note 3 - Divestitures and Other Transactions - refer to page 12 of the Corteva, Inc. interim Consolidated Financial Statements • Note 4 - Revenue - refer to page 15 of the Corteva, Inc. interim Consolidated Financial Statements • Note 5 - Restructuring and Asset Related Charges - Net - refer to page 17 of the Corteva, Inc. interim Consolidated Financial Statements • Note 6 - Related Parties - Differences exist between Corteva, Inc. and EID; refer to EID Note 2 - Related Party Transactions, below • Note 7 - Supplementary Information - refer to page 19 of the Corteva, Inc. interim Consolidated Financial Statements • Note 8 - Income Taxes - refer to page 21 of the Corteva, Inc. interim Consolidated Financial Statements • Note 9 - Earnings Per Share of Common Stock - Not applicable for EID • Note 10 - Accounts and Notes Receivable - Net - refer to page 23 of the Corteva, Inc. interim Consolidated Financial Statements • Note 11 - Inventories - refer to page 24 of the Corteva, Inc. interim Consolidated Financial Statements • Note 12 - Other Intangible Assets - refer to page 24 of the Corteva, Inc. interim Consolidated Financial Statements • Note 13 - Short-Term Borrowings, Long-Term Debt and Available Credit Facilities - refer to page 25 of the Corteva, Inc. interim Consolidated Financial Statements. In addition, EID has a related party loan payable to Corteva, Inc.; refer to EID Note 2 - Related Party Transactions, below • Note 14 - Commitments and Contingent Liabilities - refer to page 26 of the Corteva, Inc. interim Consolidated Financial Statements • Note 15 - Stockholders' Equity - refer to page 32 of the Corteva, Inc. interim Consolidated Financial Statements • Note 16 - Pension Plans and Other Post Employment Benefits - refer to page 35 of the Corteva, Inc. interim Consolidated Financial Statements • Note 17 - Financial Instruments - refer to page 36 of the Corteva, Inc. interim Consolidated Financial Statements • Note 18 - Fair Value Measurements - refer to page 41 of the Corteva, Inc. interim Consolidated Financial Statements • Note 19 - Segment Information - Differences exist between Corteva, Inc. and EID; refer to EID Note 3 - Segment Information, below

EID - Related Party Transaction

EID - Related Party Transactions (Notes)	9 Months Ended
	Sep. 30, 2020
Related Party Transaction [Line Items]
Related Party Transactions Disclosure [Text Block]	RELATED PARTIES Services Provided by and to Historical Dow and its affiliates Following the Merger and prior to the Dow Distribution, Corteva reported transactions with Historical Dow and its affiliates as related party transactions. Purchases from Historical Dow and its affiliates were $42 million for the nine months ended September 30, 2019. Transactions with DowDuPont
EID [Member]
Related Party Transaction [Line Items]
Related Party Transactions Disclosure [Text Block]	RELATED PARTY TRANSACTIONS Refer to page 19 of the Corteva, Inc. interim Consolidated Financial Statements for discussion of related party transactions with Historical Dow and DowDuPont. Transactions with Corteva In the second quarter of 2019, EID entered into a related party revolving loan from Corteva, Inc., with a maturity date in 2024. As of September 30, 2020, December 31, 2019, and September 30, 2019, the outstanding related party loan balance was $3,712 million, $4,021 million, and $4,037 million respectively (which approximates fair value), with interest rates of 1.80%, 3.27%, and 3.68%, respectively, and is reflected as long-term debt - related party in EID's interim Condensed Consolidated Balance Sheets. Additionally, EID has incurred tax deductible interest expense of $19 million and $82 million for the three and nine months ended September 30, 2020, respectively, and $39 million and $69 million for the three and nine months ended September 30, 2019 associated with the related party loan from Corteva, Inc. As of September 30, 2020, EID had payables to Corteva, Inc., the parent company, of $110 million and $84 million ($119 million and $154 million at December 31, 2019 and $102 million and $180 million at September 30, 2019, respectively) included in accrued and other current liabilities and other noncurrent obligations, respectively, in the interim Condensed Consolidated Balance Sheets related to Corteva's indemnification liabilities to Dow and DuPont per the Separation Agreements (refer to page 12 of the Corteva, Inc. interim Consolidated Financial Statements for further details of the Separation Agreements).

EID Segment FN (Notes)

EID Segment FN (Notes)	9 Months Ended
	Sep. 30, 2020
Segment Reporting Information [Line Items]
Segment Reporting Disclosure [Text Block]	Segment operating EBITDA is the primary measure of segment profitability used by Corteva’s chief operating decision maker ("CODM"). The company defines segment operating EBITDA as earnings (i.e., income from continuing operations before income taxes) before interest, depreciation, amortization, corporate expenses, non-operating (benefits) costs - net and foreign exchange gains (losses), net, excluding the impact of significant items. Non-operating (benefits) costs - net consists of non-operating pension and other post-employment benefit (OPEB) costs, tax indemnification adjustments and environmental remediation and legal costs associated with legacy EID businesses and sites. Tax indemnification adjustments relate to changes in indemnification balances, as a result of the application of the terms of the Tax Matters Agreement, between Corteva and Dow and/or DuPont that are recorded by the company as pre-tax income or expense. For purposes of the nine months ended September 30, 2019, segment operating EBITDA is calculated on a pro forma basis, as this is the manner in which the CODM assesses performance and allocates resources. Pro forma adjustments used in the calculation of pro forma segment operating EBITDA for the nine months ended September 30, 2019 were determined in accordance with Article 11 of Regulation S-X. These adjustments give effect to the Merger, the debt retirement transactions related to paying off or retiring portions of EID’s existing debt liabilities (refer to the company’s Annual Report on Form 10-K for the year ended December 31, 2019 for further information), and the separation and distribution to DowDuPont stockholders of all the outstanding shares of Corteva common stock as if they had been consummated on January 1, 2016. As of and for the Three Months Ended September 30, (In millions) Seed Crop Protection Total 2020 Net sales $ 523 $ 1,340 $ 1,863 Segment operating EBITDA $ (282) $ 130 $ (152) Segment assets 1 $ 24,372 $ 12,593 $ 36,965 2019 Net sales $ 681 $ 1,230 $ 1,911 Segment operating EBITDA $ (295) $ 119 $ (176) Segment assets 1 $ 26,021 $ 13,331 $ 39,352 1. Segment assets at December 31, 2019 were $25,387 million and $13,492 million for Seed and Crop Protection, respectively. For the Nine Months Ended September 30, (In millions) Seed Crop Protection Total 2020 Net sales $ 6,516 $ 4,494 $ 11,010 Segment operating EBITDA $ 1,255 $ 677 $ 1,932 2019 Net sales $ 6,347 $ 4,516 $ 10,863 Pro forma segment operating EBITDA $ 1,066 $ 789 $ 1,855 Reconciliation to interim Consolidated Financial Statements (Loss) income from continuing operations after income taxes to segment operating EBITDA (In millions) Three Months Ended Nine Months Ended 2020 2019 2020 2019 (Loss) income from continuing operations after income taxes $ (390) $ (527) $ 657 $ (228) (Benefit from) provision for income taxes on continuing operations (117) (104) 88 99 (Loss) income from continuing operations before income taxes (507) (631) 745 (129) Depreciation and amortization 285 226 868 711 Interest income (11) (13) (38) (46) Interest expense 11 19 35 112 Exchange losses (gains) - net 1 67 (22) 127 37 Non-operating benefits - net (73) (32) (237) (106) Significant items 49 246 351 886 Pro forma adjustments 298 Corporate expenses 27 31 81 92 Segment operating EBITDA 2 $ (152) $ (176) $ 1,932 $ 1,855 1. Excludes a $(33) million foreign exchange loss for the three and nine months ended September 30, 2019 associated with the devaluation of the Argentine peso, as it is included within significant items. See Note 7 - Supplementary Information for additional information 2. The nine months ended September 30, 2019 is presented on a pro forma basis, prepared in accordance with Article 11 of Regulation S-X.. Segment assets to total assets (in millions) September 30, 2020 December 31, 2019 September 30, 2019 Total segment assets $ 36,965 $ 38,879 $ 39,352 Corporate assets 4,725 3,518 3,883 Total assets $ 41,690 $ 42,397 $ 43,235 Significant Pre-tax Charges Not Included in Segment Operating EBITDA The three and nine months ended September 30, 2020 and 2019, respectively, included the following significant pre-tax charges which are excluded from segment operating EBITDA: (In millions) Seed Crop Protection Corporate Total For the Three Months Ended September 30, 2020 Restructuring and Asset Related Charges - Net 1 $ (9) $ (40) $ — $ (49) Total $ (9) $ (40) $ — $ (49) (In millions) Seed Crop Protection Corporate Total For the Three Months Ended September 30, 2019 Restructuring and Asset Related Charges - Net 1 $ (47) $ 1 $ — $ (46) Integration and Separation Costs 2 — — (152) (152) Amortization of inventory step up 3 (15) — — (15) Argentina currency devaluation 4 — — (33) (33) Total $ (62) $ 1 $ (185) $ (246) (In millions) Seed Crop Protection Corporate Total For the Nine Months Ended September 30, 2020 Restructuring and Asset Related Charges - Net 1 $ (154) $ (98) $ (46) $ (298) Loss on Divestiture 5 — (53) — (53) Total $ (154) $ (151) $ (46) $ (351) (In millions) Seed Crop Protection Corporate Total For the Nine Months Ended September 30, 2019 8 Restructuring and Asset Related Charges - Net 1 $ (123) $ (24) $ (20) $ (167) Integration and Separation Costs 2 — — (582) (582) Amortization of inventory step up 3 (67) — — (67) Loss on early extinguishment of debt 6 — — (13) (13) Argentina currency devaluation 4 — — (33) (33) Loss on Divestiture 7 (24) — — (24) Total $ (214) $ (24) $ (648) $ (886) 1. Includes Board approved restructuring plans and asset related charges as well as accelerated prepaid amortization expense. See Note 5 - Restructuring and Asset Related Charges - Net, for additional information. 2. Integration and separation costs include costs incurred to prepare for and close the Merger, post-Merger integration expenses, and costs incurred to prepare for the Internal Reorganizations. 3. Includes a charge related to the amortization of the inventory that was stepped up to fair value in connection with the Merger. 4. Includes a charge included in other income (expense) - net associated with remeasuring the company’s Argentine Peso net monetary assets, resulting from an unexpected August primary election result in Argentina. Throughout the three months ended September 30, 2019, the Argentine Peso dropped approximately a third of its value against the US dollar and in September of 2019, the country’s central bank announced new restrictions on foreign currency transactions. 5. Includes a loss recorded in other income - net related to the expected sale of the La Porte site. 6. Includes a loss on early extinguishment of debt related to the difference between the redemption price and the par value of the Make Whole Notes and Term Loan Facility, partially offset by the write-off of unamortized step-up related to the fair value step-up of EID's debt. 7. Includes a loss recorded in other income - net related to DAS’s sale of a joint venture related to synergy actions. 8. The nine months ended September 30, 2019 is presented on a pro forma basis, prepared in accordance with Article 11 of Regulation S-X.
EID [Member]
Segment Reporting Information [Line Items]
Segment Reporting Disclosure [Text Block]	SEGMENT INFORMATION There are no differences in reporting structure or segments between Corteva, Inc. and EID. In addition, there are no differences between Corteva, Inc. and EID segment net sales, segment operating EBITDA or pro forma segment operating EBITDA, segment assets, or significant items by segment; refer to page 42 of the Corteva, Inc. interim Consolidated Financial Statements for background information on the segments as well as further details regarding segment metrics. The tables below reconcile (loss) income from continuing operations after income taxes to segment operating EBITDA and segment assets to total assets, as differences exist between Corteva, Inc. and EID. Reconciliation to interim Consolidated Financial Statements (Loss) income from continuing operations after income taxes to segment operating EBITDA (In millions) Three Months Ended Nine Months Ended 2020 2019 2020 2019 (Loss) income from continuing operations after income taxes $ (404) $ (557) $ 595 $ (281) (Benefit from) provision for income taxes on continuing operations (122) (113) 68 83 (Loss) income from continuing operations before income taxes (526) (670) 663 (198) Depreciation and amortization 285 226 868 711 Interest income (11) (13) (38) (46) Interest expense 30 58 117 181 Exchange losses (gains) - net 1 67 (22) 127 37 Non-operating benefits - net (73) (32) (237) (106) Significant items 49 246 351 886 Pro forma adjustments 298 Corporate expenses 27 31 81 92 Segment operating EBITDA 2 $ (152) $ (176) $ 1,932 $ 1,855 1. Excludes a $(33) million foreign exchange loss for the three and nine months ended September 30, 2019 associated with the devaluation of the Argentine peso. See Note 7 - Supplementary Information of the Corteva, Inc. interim Consolidated Financial Statements for additional information. 2. The nine months ended September 30, 2019 is presented on a pro forma basis, prepared in accordance with Article 11 of Regulation S-X. Segment assets to total assets (in millions) September 30, 2020 December 31, 2019 September 30, 2019 Total segment assets $ 36,965 $ 38,879 $ 39,352 Corporate assets 4,725 3,518 3,899 Total assets $ 41,690 $ 42,397 $ 43,251

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	9 Months Ended
	Sep. 30, 2020
Accounting Policies [Abstract]
Basis of Accounting, Policy [Policy Text Block]	Interim Financial Statements The accompanying unaudited interim Consolidated Financial Statements have been prepared in accordance with generally accepted accounting principles in the United States of America ("GAAP") for interim financial information and the instructions to Form 10-Q and Rule 10-01 of Regulation S-X. In the opinion of management, all adjustments (consisting of normal recurring adjustments) considered necessary for a fair statement of the results for interim periods have been included. Results for interim periods should not be considered indicative of results for a full year. These interim Consolidated Financial Statements should be read in conjunction with the audited Consolidated Financial Statements and Notes thereto contained in the company’s Annual Report on Form 10-K for the year ended December 31, 2019, collectively referred to as the “2019 Annual Report.” The interim Consolidated Financial Statements include the accounts of the company and all of its subsidiaries in which a controlling interest is maintained. Basis of Presentation On April 1, 2019, EID completed the transfer of the assets and liabilities aligned with EID’s materials science business, including EID’s ethylene and ethylene copolymers business, excluding its ethylene acrylic elastomers business, (“EID ECP”) to separate legal entities (the “Materials Science Entities”) that were ultimately conveyed by DowDuPont to Dow. On May 1, 2019, EID completed the transfer of the assets and liabilities aligned with the EID’s specialty products business to separate legal entities (“EID Specialty Products Entities”), which were then distributed to DowDuPont. In accordance with GAAP, the financial position and results of operations of EID ECP and the EID Specialty Products Entities are presented as discontinued operations and, as such, have been excluded from continuing operations and segment results for the three and nine months ended September 30, 2019. The cash flows, comprehensive (loss) income, and equity related to EID ECP and the EID Specialty Products Entities have not been segregated and are included in the interim Condensed Consolidated Statements of Cash Flows, Consolidated Statements of Comprehensive Income (Loss), and Consolidated Statements of Equity, respectively, the three and nine months ended September 30, 2019. Amounts related to EID ECP and the EID Specialty Products Entities are consistently included or excluded from the Notes to the interim Consolidated Financial Statements based on the respective financial statement line item. See Note 3 - Divestitures and Other Transactions, for additional information. Prior to the Corteva Distribution, the combined financial statements were derived from the consolidated financial statements and accounting records of EID as well as the carve-out financial statements of DAS. The DAS carve-out financial statements reflect the historical results of operations, financial position, and cash flows of Historical Dow's Agricultural Sciences Business and include allocations of certain expenses for services from Historical Dow, including, but not limited to, general corporate expenses related to finance, legal, information technology, human resources, ethics and compliance, shared services, employee benefits and incentives, insurance, and stock-based compensation. These expenses were allocated on the basis of direct usage when identifiable, with the remainder allocated under the basis of headcount or other measures. Beginning in the second quarter 2019, the financial statements are presented on a consolidated basis. The company's interim Condensed Consolidated Balance Sheets for all periods presented consist of Corteva, Inc. and its consolidated subsidiaries. The company's Consolidated Statements of Operations (the "Consolidated Statements of Operations") for all periods prior to April 30, 2019 consist of the combined results of operations for Historical EID and DAS. The Consolidated Statements of Operations for all periods after May 1, 2019 represent the consolidated balances of the company. Intercompany balances and transactions with Historical EID and DAS have been eliminated. During the first quarter 2020, the company recorded an increase of $40 million to APIC relating to net assets recorded as transferred as part of the 2019 Internal Reorganizations that were retained. Goodwill and indefinite lived intangibles impairment testing As a result of changes in the company's long-term projections driven largely by the impacts of the novel coronavirus pandemic ("COVID 19") on the mid-term forecasted cash flows of the business, including, but not limited to currency fluctuations, expectations of future planted area (as influenced by consumer demand, ethanol markets and government policies and regulations) and relative commodity prices, the company determined a triggering event had occurred during the second quarter of 2020 that required an interim impairment assessment for its seed and crop protection reporting units and its tradename indefinite lived intangible asset.

Recent Accounting Guidance Rece

Recent Accounting Guidance Recent Accounting Guidance (Policies)	9 Months Ended
	Sep. 30, 2020
Accounting Policies [Abstract]
Recent Accounting Guidance	Recently Adopted Accounting Guidance In June 2016, the FASB issued ASU 2016-13, Financial Instruments (Topic 326): Credit Losses - Measurement of Credit Losses on Financial Statements, which requires financial assets measured at amortized cost basis to be presented at the net amount expected to be collected. The amortized cost basis of financial assets should be reduced by expected credit losses to present the net carrying value in the financial statements at the amount expected to be collected. The measurement of expected credit losses is based on past events, historical experience, current conditions and forecasts that affect the collectability of the financial assets. Additionally, credit losses relating to available-for-sale debt securities should be recorded through an allowance for credit losses. The company adopted the guidance in the first quarter of 2020. The primary impact of adoption related to the credit losses on accounts and notes receivable, which is applied using a cumulative-effect adjustment in the period of adoption, and prior periods are not restated. The adoption of ASU 2016-13 did not have a material impact on the company’s financial position, results of operations or cash flows. See Note 10 - Accounts and Notes Receivable - Net for additional information. In November 2018, the FASB issued ASU 2018-18, Collaborative Arrangements (Topic 808): Clarifying the Interaction between Topic 808 and Topic 606, which provides guidance on whether certain transactions between collaborative arrangement participants should be accounted for as revenue under Topic 606 when the collaborative arrangement participant is a customer in the context of a unit of account. Accordingly, this amendment added unit of account guidance in Topic 606 when an entity is assessing whether the collaborative arrangement, or a part of the arrangement, is within the scope of Topic 606. In addition, the amendment provides certain guidance on presenting the collaborative arrangement transaction together with Topic 606. ASU 2018-18 is effective for fiscal years beginning after December 15, 2019 and interim periods within those fiscal years and early adoption is permitted. This ASU is to be applied retrospectively to the date of initial application of Topic 606. The company adopted this guidance on January 1, 2020 and it did not have a material impact on the company’s financial position, results of operations or cash flows. In March 2020, the FASB issued ASU 2020-04, Facilitation of the Effects of Reference Rate Reform on Financial Reporting (Topic 848), which provides companies with optional financial reporting alternatives to reduce the cost and complexity associated with the accounting for contracts and hedging relationships affected by reference rate reform. The amendments in this Update are effective for all entities as of March 12, 2020 through December 31, 2022. The adoption of ASU 2020-04 did not have a material impact on the company's financial position, results of operations or cash flows, and will apply to future changes. Accounting Guidance Issued But Not Adopted as of September 30, 2020 In December 2019, the FASB issued ASU 2019-12, Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes, which was part of the FASB’s Simplification Initiative to identify, evaluate, and improve areas of U.S. GAAP for which cost and complexity can be reduced, while maintaining or improving the usefulness of the information provided to users of financial statements. This ASU amends ASC 740, Income Taxes, by removing certain exceptions to the general principles, and clarifying and amending current guidance. The new standard is effective for fiscal years, and periods within those fiscal years, beginning after December 15, 2020. Early adoption is permitted, however all amended guidance must be adopted in the same period and should be reflected as of the beginning of the annual period if initially adopted and applied during an interim period. The company is currently evaluating the impact of adopting this guidance and does not expect it will have a material impact on the company's financial position, results of operations, or cash flows.

Revenue Revenue Recognition (Po

Revenue Revenue Recognition (Policies)	9 Months Ended
	Sep. 30, 2020
Revenue from Contract with Customer [Abstract]
Revenue Recognition, Sales of Goods	Products Substantially all of Corteva's revenue is derived from product sales. Product sales consist of sales of Corteva's products to farmers, distributors, and manufacturers. Corteva considers purchase orders, which in some cases are governed by master supply agreements, to be a contract with a customer. Contracts with customers are considered to be short-term when the time between order confirmation and satisfaction of the performance obligations is equal to or less than one year. However, the company has some long-term contracts which can span multiple years.
Revenue Recognition, Licenses of Intellectual Property	Licenses of Intellectual PropertyCorteva enters into licensing arrangements with customers under which it licenses its intellectual property. Revenue from the majority of intellectual property licenses is derived from sales-based royalties. Revenue for licensing agreements that contain sales-based royalties is recognized at the later of (i) when the subsequent sale occurs or (ii) when the performance obligation to which some or all of the royalty has been allocated is satisfied.

Divestitures and Other Transa_2

Divestitures and Other Transactions (Tables)	9 Months Ended
	Sep. 30, 2020
Income Statement [Member] | ECP Disposal [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Discontinued Operations [Table Text Block]	(In millions) Nine Months Ended Net sales $ 362 Cost of goods sold 259 Research and development expense 4 Selling, general and administrative expenses 9 Amortization of intangibles 23 Restructuring and asset related charges - net 2 Integration and separation costs 44 Other income - net 2 Income from discontinued operations before income taxes 23 Provision for income taxes on discontinued operations 4 Income from discontinued operations after income taxes $ 19
Income Statement [Member] | Specialty Products Disposal [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Discontinued Operations [Table Text Block]	(In millions) Nine Months Ended Net sales $ 5,030 Cost of goods sold 3,352 Research and development expense 204 Selling, general and administrative expenses 573 Amortization of intangibles 267 Restructuring and asset related charges - net 115 Integration and separation costs 253 Goodwill impairment 1,102 Other income - net 38 Loss from discontinued operations before income taxes (798) Provision for income taxes on discontinued operations 82 Loss from discontinued operations after income taxes $ (880)
Cash Flow [Member] | ECP Disposal [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Discontinued Operations [Table Text Block]	(In millions) Nine Months Ended Depreciation $ 28 Amortization of intangibles $ 23 Capital expenditures $ 16
Cash Flow [Member] | Specialty Products Disposal [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Discontinued Operations [Table Text Block]	(In millions) Nine Months Ended Depreciation $ 281 Amortization of intangibles $ 267 Capital expenditures $ 481

Revenue (Tables)

Revenue (Tables)	9 Months Ended
	Sep. 30, 2020
Disaggregation of Revenue [Line Items]
Contract Balances	Contract Balances September 30, 2020 December 31, 2019 September 30, 2019 (In millions) Accounts and notes receivable - trade 1 $ 4,638 $ 4,396 $ 5,372 Contract assets - current 2 $ 21 $ 20 $ 20 Contract assets - noncurrent 3 $ 52 $ 49 $ 49 Deferred revenue - current 4 $ 402 $ 2,584 $ 441 Deferred revenue - noncurrent 5 $ 106 $ 108 $ 117 1. Included in accounts and notes receivable - net in the interim Condensed Consolidated Balance Sheets. 2. Included in other current assets in the interim Condensed Consolidated Balance Sheets. 3. Included in other assets in the interim Condensed Consolidated Balance Sheets. 4. Included in accrued and other current liabilities in the interim Condensed Consolidated Balance Sheets.
Major Product Line [Member]
Disaggregation of Revenue [Line Items]
Disaggregation of Revenue	Three Months Ended Nine Months Ended (In millions) 2020 2019 2020 2019 Corn $ 303 $ 372 $ 4,224 $ 4,149 Soybean 116 168 1,382 1,297 Other oilseeds 62 44 529 469 Other 42 97 381 432 Seed 523 681 6,516 6,347 Herbicides 1 583 574 2,315 2,338 Insecticides 1 395 330 1,218 1,158 Fungicides 1 261 245 714 767 Other 1 101 81 247 253 Crop Protection 1,340 1,230 4,494 4,516 Total $ 1,863 $ 1,911 $ 11,010 $ 10,863 1. Prior periods have been reclassified to conform to current period presentation.
Geography [Domain]
Disaggregation of Revenue [Line Items]
Disaggregation of Revenue	Seed Three Months Ended Nine Months Ended (In millions) 2020 2019 2020 2019 North America 1 $ 97 $ 226 $ 4,290 $ 4,238 EMEA 2 117 122 1,262 1,200 Latin America 246 271 668 636 Asia Pacific 63 62 296 273 Total $ 523 $ 681 $ 6,516 $ 6,347 Crop Protection Three Months Ended Nine Months Ended (In millions) 2020 2019 2020 2019 North America 1 $ 390 $ 397 $ 1,528 $ 1,562 EMEA 2 198 183 1,163 1,136 Latin America 559 491 1,086 1,144 Asia Pacific 193 159 717 674 Total $ 1,340 $ 1,230 $ 4,494 $ 4,516 1. Represents U.S. & Canada. 2. Europe, Middle East, and Africa ("EMEA").

Restructuring and Asset Relat_2

Restructuring and Asset Related Charges (Tables)	9 Months Ended
	Sep. 30, 2020
Execute to Win Productivity Program [Domain]
Restructuring Cost and Reserve [Line Items]
Schedule of Restructuring Reserve by Type of Cost [Table Text Block]	Three Months Ended Nine Months Ended (In millions) 2020 2020 Seed $ — $ 3 Crop Protection 30 85 Corporate expenses — 46 Total $ 30 $ 134 Three Months Ended Nine Months Ended (In millions) 2020 2020 Severance and related benefit costs $ — $ 46 Asset related charges 30 88 Total restructuring and asset related charges - net $ 30 $ 134 (In millions) Severance and Related Benefit Costs Asset Related Total Balance at December 31, 2019 $ — $ — $ — Charges to income from continuing operations for the nine months ended September 30, 2020 46 88 134 Payments (5) (3) (8) Asset write-offs — (82) (82) Balance at September 30, 2020 $ 41 $ 3 $ 44
DowDuPont Cost Synergy Program [Member]
Restructuring Cost and Reserve [Line Items]
Schedule of Restructuring Reserve by Type of Cost [Table Text Block]	Three Months Ended Nine Months Ended (In millions) 2020 2019 2020 2019 Seed $ (1) $ (7) $ (7) $ 66 Crop Protection 10 (1) 13 28 Corporate expenses — — — 20 Total $ 9 $ (8) $ 6 $ 114 Three Months Ended Nine Months Ended (In millions) 2020 2019 2020 2019 Severance and related benefit costs $ — $ — $ — $ 14 Contract termination charges — — — 69 Asset related (benefits) charges 9 (8) 6 31 Total restructuring and asset related charges (benefits) - net $ 9 $ (8) $ 6 $ 114 (In millions) Severance and Related Benefit Costs Costs Associated with Exit and Disposal Activities 1 Asset Related Total Balance at December 31, 2019 $ 29 $ 40 $ — $ 69 Charges to income from continuing operations for the nine months ended September 30, 2020 — — 9 9 Payments (16) (8) 2 (22) Asset write-offs — — (11) (11) Balance at September 30, 2020 $ 13 $ 32 $ — $ 45 1. Relates primarily to contract terminations charges.

Supplementary Information (Tabl

Supplementary Information (Tables)	9 Months Ended
	Sep. 30, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Schedule of Other Nonoperating Income (Expense)	Other Income - Net Three Months Ended Nine Months Ended (In millions) 2020 2019 2020 2019 Interest income $ 11 $ 13 $ 38 $ 46 Equity in losses of affiliates - net — (3) (3) (8) Net gain (loss) on sales of businesses and other assets 1 1 2 (29) (9) Net exchange losses 2 (67) (11) (127) (70) Non-operating pension and other post employment benefit credit 3 93 47 275 144 Miscellaneous income (expenses) - net 4 (8) 11 (34) (13) Other income - net $ 30 $ 59 $ 120 $ 90 1. The nine months ended September 30, 2020 includes a loss of $(53) million relating to the expected sale of the La Porte site, for which the company signed an agreement in 2020. The nine months ended September 30, 2019 includes a loss of $(24) million relating to DAS’s sale of a joint venture related to synergy actions. 2. Includes net pre-tax exchange losses of $(26) million and $(56) million for the three and nine months ended September 30, 2020, respectively, and $(33) million and $(42) million for the three and nine months ended September 30, 2019, respectively, associated with the devaluation of the Argentine peso. 3. Includes non-service related components of net periodic benefit credits (costs) (interest cost, expected return on plan assets, amortization of unrecognized (gain) loss, amortization of prior service benefit and settlement (loss) gain). 4. Miscellaneous income (expenses) - net, includes losses related to loss on sale of receivables, bank charges and other items.
Foreign Currency Exchange Gain (Loss)	(In millions) Three Months Ended Nine Months Ended 2020 2019 2020 2019 Subsidiary Monetary Position (Losses) Gains Pre-tax exchange losses 1 $ (61) $ (66) $ (300) $ (59) Local tax benefits (expenses) 16 1 44 (2) Net after-tax impact from subsidiary exchange losses $ (45) $ (65) $ (256) $ (61) Hedging Program (Losses) Gains Pre-tax exchange (losses) gains $ (6) $ 55 $ 173 $ (11) Tax benefits (expenses) 2 (13) (41) 2 Net after-tax impact from hedging program exchange (losses) gains $ (4) $ 42 $ 132 $ (9) Total Exchange (Losses) Gains Pre-tax exchange losses 1 $ (67) $ (11) $ (127) $ (70) Tax benefits (expenses) 18 (12) 3 — Net after-tax exchange losses $ (49) $ (23) $ (124) $ (70)
Restrictions on Cash and Cash Equivalents	(In millions) September 30, 2020 December 31, 2019 September 30, 2019 Cash and cash equivalents $ 2,768 $ 1,764 $ 1,980 Restricted cash 354 409 420 Total cash, cash equivalents and restricted cash $ 3,122 $ 2,173 $ 2,400

Earnings Per Share (Tables)

Earnings Per Share (Tables)	9 Months Ended
	Sep. 30, 2020
Earnings Per Share [Abstract]
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]	Net (Loss) Income for Earnings Per Share Calculations - Basic and Diluted Three Months Ended Nine Months Ended (In millions) 2020 2019 2020 2019 (Loss) income from continuing operations after income taxes $ (390) $ (527) $ 657 $ (228) Net income (loss) attributable to continuing operations noncontrolling interests 2 (11) 18 10 (Loss) income from continuing operations available to Corteva common stockholders (392) (516) 639 (238) (Loss) income from discontinued operations, net of tax — 22 1 (695) Net income attributable to discontinued operations noncontrolling interests — — — 5 Income (loss) from discontinued operations available to Corteva common stockholders — 22 1 (700) Net (loss) income available to common stockholders $ (392) $ (494) $ 640 $ (938)
Schedule of Earnings Per Share, Basic, by Common Class, Including Two Class Method [Table Text Block]	(Loss) Earnings Per Share Calculations - Basic Three Months Ended Nine Months Ended (Dollars per share) 2020 2019 2020 2019 (Loss) earnings per share of common stock from continuing operations $ (0.52) $ (0.69) $ 0.85 $ (0.32) Earnings (loss) per share of common stock from discontinued operations — 0.03 — (0.93) (Loss) earnings per share of common stock $ (0.52) $ (0.66) $ 0.85 $ (1.25)
Schedule of Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Table Text Block]	(Loss) Earnings Per Share Calculations - Diluted Three Months Ended Nine Months Ended (Dollars per share) 2020 2019 2020 2019 (Loss) earnings per share of common stock from continuing operations $ (0.52) $ (0.69) $ 0.85 $ (0.32) Earnings (loss) per share of common stock from discontinued operations — 0.03 — (0.93) (Loss) earnings per share of common stock $ (0.52) $ (0.66) $ 0.85 $ (1.25)
Share Count Information	Share Count Information Three Months Ended Nine Months Ended (Shares in millions) 2020 2019 2020 2019 Weighted-average common shares - basic 1 749.5 749.5 749.5 749.4 Plus dilutive effect of equity compensation plans 2 — — 2.5 — Weighted-average common shares - diluted 749.5 749.5 752.0 749.4 Potential shares of common stock excluded from EPS calculations 3 14.6 13.8 9.7 13.8 1. Share amounts for all periods prior to the Corteva Distribution were based on 748.8 million shares of Corteva, Inc. common stock distributed to holders of DowDuPont's common stock on June 1, 2019, plus 0.6 million of additional shares in which accelerated vesting conditions have been met. 2. Diluted earnings per share considers the impact of potentially dilutive securities except in periods in which there is a loss because the inclusion of the potential common shares would have an anti-dilutive effect. 3. These outstanding potential shares of common stock relating to stock options, restricted stock units and performance-based restricted stock units were excluded from the calculation of diluted earnings per share because the effect of including them would have been anti-dilutive.

Accounts and Notes Receivable_2

Accounts and Notes Receivable (Tables)	9 Months Ended
	Sep. 30, 2020
Accounts and Notes Receivable [Abstract]
Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]	(In millions) September 30, 2020 December 31, 2019 September 30, 2019 Accounts receivable – trade 1 $ 3,231 $ 4,225 $ 3,969 Notes receivable – trade 1,2 1,407 171 1,403 Other 3 989 1,132 1,202 Total accounts and notes receivable - net $ 5,627 $ 5,528 $ 6,574 1. Accounts receivable – trade and notes receivable - trade are net of allowances of $210 million at September 30, 2020, $174 million at December 31, 2019, and $170 million at September 30, 2019. The allowance at September 30, 2020 is equal to the expected credit losses and was developed using a loss-rate method. The allowance at December 31, 2019 and September 30, 2019 is equal to the estimated uncollectible amounts and is based on historical collection experience, current economic and market conditions, and review of the current status of customers' accounts. 2. Notes receivable – trade primarily consists of receivables for deferred payment loan programs for the sale of seed products to customers. These loans have terms of one year or less and are primarily concentrated in North America. The company maintains a rigid pre-approval process for extending credit to customers in order to manage overall risk and exposure associated with credit losses. As of September 30, 2020, December 31, 2019, and September 30, 2019 there were no significant impairments related to current loan agreements. 3. Other includes receivables in relation to indemnification assets, value added tax, general sales tax and other taxes. No individual group represents more than 10 percent of total receivables. In addition, Other includes amounts due from nonconsolidated affiliates of $92 million, $119 million, and $127 million as of September 30, 2020, December 31, 2019, and September 30, 2019, respectively.
Accounts Receivable, Allowance for Credit Loss [Table Text Block]	(In millions) Balance at December 31, 2019 $ 174 Additions charged to expenses 153 Write-offs charged against allowance (6) Recoveries collected (99) Other (12) Balance at September 30, 2020 $ 210

Inventories (Tables)

Inventories (Tables)	9 Months Ended
	Sep. 30, 2020
Inventory Disclosure [Abstract]
Schedule of Inventory, Current [Table Text Block]	(In millions) September 30, 2020 December 31, 2019 September 30, 2019 Finished products $ 2,074 $ 2,684 $ 2,295 Semi-finished products 1,878 1,850 1,691 Raw materials and supplies 422 498 417 Total inventories $ 4,374 $ 5,032 $ 4,403

Other Intangible Assets (Tables

Other Intangible Assets (Tables)	9 Months Ended
	Sep. 30, 2020
Goodwill and Intangible Assets Disclosure [Abstract]
Other Intangible Assets	(In millions) September 30, 2020 December 31, 2019 September 30, 2019 Gross Accumulated Net Gross Accumulated Net Gross Accumulated Net Intangible assets subject to amortization (Definite-lived): Germplasm 1 $ 6,265 $ (253) $ 6,012 $ 6,265 $ (63) $ 6,202 Customer-related 1,966 (352) 1,614 1,977 (268) 1,709 $ 1,969 $ (238) $ 1,731 Developed technology 1,463 (499) 964 1,463 (370) 1,093 1,463 (332) 1,131 Trademarks/trade names 161 (86) 75 166 (86) 80 166 (84) 82 Favorable supply contracts 475 (279) 196 475 (207) 268 475 (183) 292 Other 2 405 (233) 172 404 (213) 191 401 (206) 195 Total other intangible assets with finite lives 10,735 (1,702) 9,033 10,750 (1,207) 9,543 4,474 (1,043) 3,431 Intangible assets not subject to amortization (Indefinite-lived): IPR&D 10 — 10 10 — 10 100 — 100 Germplasm 1 6,265 — 6,265 Tradename 1,871 — 1,871 1,871 — 1,871 1,871 — 1,871 Total other intangible assets 1,881 — 1,881 1,881 — 1,881 8,236 — 8,236 Total $ 12,616 $ (1,702) $ 10,914 $ 12,631 $ (1,207) $ 11,424 $ 12,710 $ (1,043) $ 11,667 1. Beginning on October 1, 2019, the company changed its indefinite life assertion of the germplasm assets to definite lived with a useful life of 25 years. This change is the result of a more focused development effort of new seed products coupled with an intent to out license select germplasm on a non-exclusive basis. Prior to changing the useful life of the germplasm assets, the company tested the assets for impairment under ASC 350 - Intangibles, Goodwill and Other, concluding the assets were not impaired. 2. Primarily consists of sales and farmer networks, marketing and manufacturing alliances and noncompetition agreements.

Short-Term Borrowings, Long-T_2

Short-Term Borrowings, Long-Term Debt and Available Credit Facilities Debt (Tables)	9 Months Ended
	Sep. 30, 2020
Debt Instrument [Line Items]
Schedule of Long-term Debt Instruments [Table Text Block]	Long-Term Debt (In millions) September 30, 2020 December 31, 2019 September 30, 2019 Amount Weighted Average Rate Amount Weighted Average Rate Amount Weighted Average Rate Promissory notes and debentures: Maturing in 2025 $ 500 1.70 % $ — — % $ — — % Maturing in 2030 500 2.30 % $ — — % $ — — % Other loans: Foreign currency loans, various rates and maturities 1 2 4 Medium-term notes, varying maturities through 2041 109 — % 109 1.61 % 110 1.88 % Finance lease obligations 4 5 6 Less: Unamortized debt discount and issuance costs 11 — — Less: Long-term debt due within one year 1 1 4 Total $ 1,102 $ 115 $ 116
Schedule of Short-term Debt [Table Text Block]	Short-term borrowings and finance lease obligations (In millions) September 30, 2020 December 31, 2019 September 30, 2019 Commercial paper $ 926 $ — $ 2,432 Repurchase facility 1,175 — 1,129 Other loans - various currencies 39 2 35 Long-term debt payable within one year 1 1 4 Finance lease obligations payable within one year 1 4 4 Total short-term borrowings and finance lease obligations $ 2,142 $ 7 $ 3,604

Commitments and Contingent Li_2

Commitments and Contingent Liabilities (Tables)	9 Months Ended
	Sep. 30, 2020
Commitments and Contingencies Disclosure [Abstract]
Schedule of Environmental Loss Contingencies by Site [Table Text Block]	As of September 30, 2020 (In millions) Indemnification Asset Accrual balance 3 Potential exposure above amount accrued 3 Environmental Remediation Stray Liabilities Chemours related obligations - subject to indemnity 1,2 $ 158 $ 158 $ 284 Other discontinued or divested businesses obligations 1 83 219 Environmental remediation liabilities primarily related to DuPont - subject to indemnity from DuPont 2 34 34 62 Environmental remediation liabilities not subject to indemnity 67 45 Total $ 192 $ 342 $ 610 1. Represents liabilities that are subject the $200 million thresholds and sharing arrangements as discussed on page 28, under Corteva Separation Agreement. 2. The company has recorded an indemnification asset related to these accruals, including $30 million related to the Superfund sites. 3. Accrual balance represents management’s best estimate of the costs of remediation and restoration, although it is reasonably possible that the potential exposure, as indicated, could range above the amounts accrued, as there are inherent uncertainties in these estimates.

Stockholders' Equity (Tables)

Stockholders' Equity (Tables)	9 Months Ended
	Sep. 30, 2020
Equity [Abstract]
Schedule of Stock by Class [Table Text Block]	Shares of common stock Issued Balance January 1, 2020 748,577,000 Issued 1,940,000 Repurchased and retired (3,025,000) Balance September 30, 2020 747,492,000
Schedule of Noncontrolling Interests Represented by Preferred Stock [Table Text Block]	Shares in thousands Number of Shares Authorized 23,000 $4.50 Series, callable at $120 1,673 $3.50 Series, callable at $102 700
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]	(In millions) Cumulative Translation Adjustment 1 Derivative Instruments Pension Benefit Plans Other Benefit Plans Total 2019 Balance January 1, 2019 $ (2,793) $ (26) $ (620) $ 79 $ (3,360) Other comprehensive (loss) income before reclassifications (471) 11 9 (85) (536) Amounts reclassified from accumulated other comprehensive loss — 12 4 (1) 15 Net other comprehensive (loss) income (471) 23 13 (86) (521) Impact of Internal Reorganizations 1,123 — 91 — 1,214 Balance September 30, 2019 $ (2,141) $ (3) $ (516) $ (7) $ (2,667) 2020 Balance January 1, 2020 $ (1,944) $ 2 $ (1,247) $ (81) $ (3,270) Other comprehensive (loss) income before reclassifications (507) (23) (10) 2 (538) Amounts reclassified from accumulated other comprehensive loss — 7 4 1 12 Net other comprehensive (loss) income (507) (16) (6) 3 (526) Balance September 30, 2020 $ (2,451) $ (14) $ (1,253) $ (78) $ (3,796) 1. The cumulative translation adjustment loss for the nine months ended September 30, 2019 was primarily driven by the strengthening of the USD against the Brazilian Real (“BRL”), the European Euro (“EUR”) and the South African Rand (“ZAR”). The cumulative translation adjustment loss for the nine months ended September 30, 2020 was primarily driven by strengthening of the USD against the Brazilian Real ("BRL") and the South African Rand ("ZAR").
Tax (Expense) Benefit of Other Comprehensive (Loss) Income	(In millions) Three Months Ended Nine Months Ended September 30, 2020 2019 2020 2019 Derivative instruments $ 4 $ 1 $ 6 $ (6) Pension benefit plans - net — — (3) 4 Other benefit plans - net — — — 29 (Provision for) benefit from income taxes related to other comprehensive (loss) income items $ 4 $ 1 $ 3 $ 27
Reclassification out of Accumulated Other Comprehensive (Loss) Income [Table Text Block]	(In millions) Three Months Ended Nine Months Ended September 30, 2020 2019 2020 2019 Derivative Instruments 1 : $ (22) $ 1 $ 13 $ 13 Tax benefit 2 3 — (6) (1) After-tax $ (19) $ 1 $ 7 $ 12 Amortization of pension benefit plans: Prior service benefit 3 $ — $ — $ (1) $ — Actuarial losses 3 1 1 3 2 Settlement loss 3 — 1 3 2 Total before tax 1 2 5 4 Tax benefit 2 — — (1) — After-tax $ 1 $ 2 $ 4 $ 4 Amortization of other benefit plans: Actuarial gains 3 $ 1 $ — $ 1 $ (1) Total before tax 1 — 1 (1) Tax benefit 2 — — — — After-tax $ 1 $ — $ 1 $ (1) Total reclassifications for the period, after-tax $ (17) $ 3 $ 12 $ 15 1. Reflected in cost of goods sold. 2. Reflected in provision for (benefit from) income taxes from continuing operations.

Pension Plans and Other Post _2

Pension Plans and Other Post Employment Benefit Plans (Tables)	9 Months Ended
	Sep. 30, 2020
Retirement Benefits [Abstract]
Schedule of Net Benefit Costs [Table Text Block]	Three Months Ended Nine Months Ended September 30, (In millions) 2020 2019 2020 2019 Defined Benefit Pension Plans: Service cost $ 6 $ 5 $ 19 $ 37 Interest cost 139 185 420 592 Expected return on plan assets (250) (253) (750) (839) Amortization of unrecognized loss 1 — 3 2 Amortization of prior service benefit — — (1) — Settlement/curtailment loss — 1 3 — Net periodic benefit credit - Total $ (104) $ (62) $ (306) $ (208) Less: Discontinued operations 1 — — — (17) Net periodic benefit credit - Continuing operations $ (104) $ (62) $ (306) $ (191) Other Post Employment Benefits: Service cost $ — $ — $ 1 $ 3 Interest cost 16 20 49 65 Amortization of unrecognized loss (gain) 1 — 1 (1) Net periodic benefit cost - Continuing operations $ 17 $ 20 $ 51 $ 67

Financial Instruments (Tables)

Financial Instruments (Tables)	9 Months Ended
	Sep. 30, 2020
Derivative [Line Items]
Schedule of Notional Amounts of Outstanding Derivative Positions [Table Text Block]	Notional Amounts (In millions) September 30, 2020 December 31, 2019 September 30, 2019 Derivatives designated as hedging instruments: Foreign currency contracts $ 770 $ — $ — Commodity contracts $ 51 $ 570 $ 73 Derivatives not designated as hedging instruments: Foreign currency contracts $ 924 $ 582 $ 1,313
Fair Value of Derivatives Instruments	September 30, 2020 (In millions) Balance Sheet Location Gross Counterparty and Cash Collateral Netting 1 Net Amounts Included in the Condensed Consolidated Balance Sheet Asset derivatives: Derivatives designated as hedging instruments: Foreign currency contracts Other current assets $ 24 $ — $ 24 Derivatives not designated as hedging instruments: Foreign currency contracts Other current assets 101 $ (75) $ 26 Commodity contracts Other current assets 1 — $ 1 Total asset derivatives $ 126 $ (75) $ 51 Liability derivatives: Derivatives designated as hedging instruments: Foreign currency contracts Accrued and other current liabilities 12 — 12 Derivatives not designated as hedging instruments: Foreign currency contracts Accrued and other current liabilities 84 $ (69) $ 15 Commodity contracts Accrued and other current liabilities 1 — $ 1 Total liability derivatives $ 97 $ (69) $ 28 December 31, 2019 (In millions) Balance Sheet Location Gross Counterparty and Cash Collateral Netting 1 Net Amounts Included in the Condensed Consolidated Balance Sheet Asset derivatives: Derivatives not designated as hedging instruments: Foreign currency contracts Other current assets $ 25 $ (18) $ 7 Total asset derivatives $ 25 $ (18) $ 7 Liability derivatives: Derivatives not designated as hedging instruments: Foreign currency contracts Accrued and other current liabilities $ 43 $ (16) $ 27 Total liability derivatives $ 43 $ (16) $ 27 September 30, 2019 (In millions) Balance Sheet Location Gross Counterparty and Cash Collateral Netting 1 Net Amounts Included in the Condensed Consolidated Balance Sheet Asset derivatives: Derivatives not designated as hedging instruments: Foreign currency contracts Other current assets $ 74 $ (6) $ 68 Total asset derivatives $ 74 $ (6) $ 68 Liability derivatives: Derivatives not designated as hedging instruments: Foreign currency contracts Accrued and other current liabilities $ 20 $ 7 $ 27 Total liability derivatives $ 20 $ 7 $ 27
Effect of Derivatives	Amount of (Loss) Gain Recognized in OCI 1 - Pre-Tax Three Months Ended Nine Months Ended (In millions) 2020 2019 2020 2019 Derivatives designated as hedging instruments: Net investment hedges: Foreign currency contracts $ (20) $ — $ (16) $ — Cash flow hedges: Foreign currency contracts 4 — 27 — Commodity contracts 14 (2) (46) 16 Total derivatives designated as hedging instruments (2) (2) (35) 16 Total derivatives $ (2) $ (2) $ (35) $ 16 1. OCI is defined as other comprehensive income (loss). Amount of Gain (Loss) Recognized in Income - Pre-Tax 1 (In millions) Three Months Ended Nine Months Ended 2020 2019 2020 2019 Derivatives designated as hedging instruments: Cash flow hedges: Foreign currency contracts 2 $ 19 $ — $ 19 $ — Commodity contracts 2 3 $ (1) (32) $ (13) Total derivatives designated as hedging instruments 22 (1) (13) (13) Derivatives not designated as hedging instruments: Foreign currency contracts 3 (6) 55 173 (11) Foreign currency contracts 2 3 — 19 — Commodity contracts 2 — 1 9 9 Total derivatives not designated as hedging instruments (3) 56 201 (2) Total derivatives $ 19 $ 55 $ 188 $ (15) 1. For cash flow hedges, this represents the portion of the gain (loss) reclassified from accumulated OCI into income during the period. 2. Recorded in cost of goods sold.
Commodity Contract [Member]
Derivative [Line Items]
After-Tax Effect of Cash Flow Hedges Included in Accumulated Other Comprehensive Income (Loss)	Three Months Ended Nine Months Ended September 30, (In millions) 2020 2019 2020 2019 Beginning balance $ (16) $ (3) $ 2 $ (26) Additions and revaluations of derivatives designated as cash flow hedges 10 (1) (34) 11 Clearance of hedge results to earnings (2) 1 24 12 Ending balance $ (8) $ (3) $ (8) $ (3)
Foreign Currency Contract [Member]
Derivative [Line Items]
After-Tax Effect of Cash Flow Hedges Included in Accumulated Other Comprehensive Income (Loss)	Three Months Ended Nine Months Ended September 30, (In millions) 2020 2020 Beginning balance $ 19 $ — Additions and revaluations of derivatives designated as cash flow hedges 4 23 Clearance of hedge results to earnings (17) (17) Ending balance $ 6 $ 6

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Fair Value Disclosures [Abstract]
Fair Value of Assets and Liabilities Measured on Recurring Basis	September 30, 2020 Significant Other Observable Inputs (Level 2) (In millions) Assets at fair value: Cash equivalents and restricted cash equivalents 1 $ 1,986 Marketable securities 152 Derivatives relating to: 2 Foreign currency 125 Commodity contracts 1 Total assets at fair value $ 2,264 Liabilities at fair value: Derivatives relating to: 2 Foreign currency 96 Commodity contracts 1 Total liabilities at fair value $ 97 December 31, 2019 Significant Other Observable Inputs (Level 2) (In millions) Assets at fair value: Cash equivalents and restricted cash equivalents 1 $ 1,293 Marketable securities 5 Derivatives relating to: 2 Foreign currency 25 Total assets at fair value $ 1,323 Liabilities at fair value: Derivatives relating to: 2 Foreign currency 43 Total liabilities at fair value $ 43 September 30, 2019 Significant Other Observable Inputs (Level 2) (In millions) Assets at fair value: Cash equivalents and restricted cash equivalents 1 $ 1,568 Marketable securities 117 Derivatives relating to: 2 Foreign currency 74 Total assets at fair value $ 1,759 Liabilities at fair value: Derivatives relating to: 2 Foreign currency 20 Total liabilities at fair value $ 20 1. Time deposits included in cash and cash equivalents and money market funds included in other current assets in the interim Condensed Consolidated Balance Sheets are held at amortized cost, which approximates fair value. 2. See Note 17 - Financial Instruments for the classification of derivatives in the interim Condensed Consolidated Balance Sheets.
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis, Valuation Techniques		Basis of Fair Value Measurements on a Nonrecurring Basis at September 30 (In millions) Significant Other Unobservable Inputs (Level 3) Total Losses 2019 Assets at fair value: Developed technology — (1) Other intangible assets — (6) IPR&D — (47)

Segment Reporting (Tables)

Segment Reporting (Tables)	9 Months Ended
	Sep. 30, 2020
Segment Reporting Information [Line Items]
Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Table Text Block]	Reconciliation to interim Consolidated Financial Statements (Loss) income from continuing operations after income taxes to segment operating EBITDA (In millions) Three Months Ended Nine Months Ended 2020 2019 2020 2019 (Loss) income from continuing operations after income taxes $ (390) $ (527) $ 657 $ (228) (Benefit from) provision for income taxes on continuing operations (117) (104) 88 99 (Loss) income from continuing operations before income taxes (507) (631) 745 (129) Depreciation and amortization 285 226 868 711 Interest income (11) (13) (38) (46) Interest expense 11 19 35 112 Exchange losses (gains) - net 1 67 (22) 127 37 Non-operating benefits - net (73) (32) (237) (106) Significant items 49 246 351 886 Pro forma adjustments 298 Corporate expenses 27 31 81 92 Segment operating EBITDA 2 $ (152) $ (176) $ 1,932 $ 1,855 1. Excludes a $(33) million foreign exchange loss for the three and nine months ended September 30, 2019 associated with the devaluation of the Argentine peso, as it is included within significant items. See Note 7 - Supplementary Information for additional information 2. The nine months ended September 30, 2019 is presented on a pro forma basis, prepared in accordance with Article 11 of Regulation S-X..
Schedule of Segment Reporting Information, by Segment [Table Text Block]	As of and for the Three Months Ended September 30, (In millions) Seed Crop Protection Total 2020 Net sales $ 523 $ 1,340 $ 1,863 Segment operating EBITDA $ (282) $ 130 $ (152) Segment assets 1 $ 24,372 $ 12,593 $ 36,965 2019 Net sales $ 681 $ 1,230 $ 1,911 Segment operating EBITDA $ (295) $ 119 $ (176) Segment assets 1 $ 26,021 $ 13,331 $ 39,352 1. Segment assets at December 31, 2019 were $25,387 million and $13,492 million for Seed and Crop Protection, respectively. For the Nine Months Ended September 30, (In millions) Seed Crop Protection Total 2020 Net sales $ 6,516 $ 4,494 $ 11,010 Segment operating EBITDA $ 1,255 $ 677 $ 1,932 2019 Net sales $ 6,347 $ 4,516 $ 10,863 Pro forma segment operating EBITDA $ 1,066 $ 789 $ 1,855
Reconciliation of Assets from Segment to Consolidated [Table Text Block]	Segment assets to total assets (in millions) September 30, 2020 December 31, 2019 September 30, 2019 Total segment assets $ 36,965 $ 38,879 $ 39,352 Corporate assets 4,725 3,518 3,883 Total assets $ 41,690 $ 42,397 $ 43,235
Schedule of Additional Segment Details [Table Text Block]	(In millions) Seed Crop Protection Corporate Total For the Three Months Ended September 30, 2020 Restructuring and Asset Related Charges - Net 1 $ (9) $ (40) $ — $ (49) Total $ (9) $ (40) $ — $ (49) (In millions) Seed Crop Protection Corporate Total For the Three Months Ended September 30, 2019 Restructuring and Asset Related Charges - Net 1 $ (47) $ 1 $ — $ (46) Integration and Separation Costs 2 — — (152) (152) Amortization of inventory step up 3 (15) — — (15) Argentina currency devaluation 4 — — (33) (33) Total $ (62) $ 1 $ (185) $ (246) (In millions) Seed Crop Protection Corporate Total For the Nine Months Ended September 30, 2020 Restructuring and Asset Related Charges - Net 1 $ (154) $ (98) $ (46) $ (298) Loss on Divestiture 5 — (53) — (53) Total $ (154) $ (151) $ (46) $ (351) (In millions) Seed Crop Protection Corporate Total For the Nine Months Ended September 30, 2019 8 Restructuring and Asset Related Charges - Net 1 $ (123) $ (24) $ (20) $ (167) Integration and Separation Costs 2 — — (582) (582) Amortization of inventory step up 3 (67) — — (67) Loss on early extinguishment of debt 6 — — (13) (13) Argentina currency devaluation 4 — — (33) (33) Loss on Divestiture 7 (24) — — (24) Total $ (214) $ (24) $ (648) $ (886) 1. Includes Board approved restructuring plans and asset related charges as well as accelerated prepaid amortization expense. See Note 5 - Restructuring and Asset Related Charges - Net, for additional information. 2. Integration and separation costs include costs incurred to prepare for and close the Merger, post-Merger integration expenses, and costs incurred to prepare for the Internal Reorganizations. 3. Includes a charge related to the amortization of the inventory that was stepped up to fair value in connection with the Merger. 4. Includes a charge included in other income (expense) - net associated with remeasuring the company’s Argentine Peso net monetary assets, resulting from an unexpected August primary election result in Argentina. Throughout the three months ended September 30, 2019, the Argentine Peso dropped approximately a third of its value against the US dollar and in September of 2019, the country’s central bank announced new restrictions on foreign currency transactions. 5. Includes a loss recorded in other income - net related to the expected sale of the La Porte site. 6. Includes a loss on early extinguishment of debt related to the difference between the redemption price and the par value of the Make Whole Notes and Term Loan Facility, partially offset by the write-off of unamortized step-up related to the fair value step-up of EID's debt. 7. Includes a loss recorded in other income - net related to DAS’s sale of a joint venture related to synergy actions.

EID Segment FN (Tables)

EID Segment FN (Tables)	9 Months Ended
	Sep. 30, 2020
Segment Reporting Information [Line Items]
Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Table Text Block]	Reconciliation to interim Consolidated Financial Statements (Loss) income from continuing operations after income taxes to segment operating EBITDA (In millions) Three Months Ended Nine Months Ended 2020 2019 2020 2019 (Loss) income from continuing operations after income taxes $ (390) $ (527) $ 657 $ (228) (Benefit from) provision for income taxes on continuing operations (117) (104) 88 99 (Loss) income from continuing operations before income taxes (507) (631) 745 (129) Depreciation and amortization 285 226 868 711 Interest income (11) (13) (38) (46) Interest expense 11 19 35 112 Exchange losses (gains) - net 1 67 (22) 127 37 Non-operating benefits - net (73) (32) (237) (106) Significant items 49 246 351 886 Pro forma adjustments 298 Corporate expenses 27 31 81 92 Segment operating EBITDA 2 $ (152) $ (176) $ 1,932 $ 1,855 1. Excludes a $(33) million foreign exchange loss for the three and nine months ended September 30, 2019 associated with the devaluation of the Argentine peso, as it is included within significant items. See Note 7 - Supplementary Information for additional information 2. The nine months ended September 30, 2019 is presented on a pro forma basis, prepared in accordance with Article 11 of Regulation S-X..
Reconciliation of Assets from Segment to Consolidated [Table Text Block]	Segment assets to total assets (in millions) September 30, 2020 December 31, 2019 September 30, 2019 Total segment assets $ 36,965 $ 38,879 $ 39,352 Corporate assets 4,725 3,518 3,883 Total assets $ 41,690 $ 42,397 $ 43,235
EID [Member]
Segment Reporting Information [Line Items]
Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Table Text Block]	(Loss) income from continuing operations after income taxes to segment operating EBITDA (In millions) Three Months Ended Nine Months Ended 2020 2019 2020 2019 (Loss) income from continuing operations after income taxes $ (404) $ (557) $ 595 $ (281) (Benefit from) provision for income taxes on continuing operations (122) (113) 68 83 (Loss) income from continuing operations before income taxes (526) (670) 663 (198) Depreciation and amortization 285 226 868 711 Interest income (11) (13) (38) (46) Interest expense 30 58 117 181 Exchange losses (gains) - net 1 67 (22) 127 37 Non-operating benefits - net (73) (32) (237) (106) Significant items 49 246 351 886 Pro forma adjustments 298 Corporate expenses 27 31 81 92 Segment operating EBITDA 2 $ (152) $ (176) $ 1,932 $ 1,855 1. Excludes a $(33) million foreign exchange loss for the three and nine months ended September 30, 2019 associated with the devaluation of the Argentine peso. See Note 7 - Supplementary Information of the Corteva, Inc. interim Consolidated Financial Statements for additional information. 2. The nine months ended September 30, 2019 is presented on a pro forma basis, prepared in accordance with Article 11 of Regulation S-X.
Reconciliation of Assets from Segment to Consolidated [Table Text Block]	Segment assets to total assets (in millions) September 30, 2020 December 31, 2019 September 30, 2019 Total segment assets $ 36,965 $ 38,879 $ 39,352 Corporate assets 4,725 3,518 3,899 Total assets $ 41,690 $ 42,397 $ 43,251

Summary of Significant Accoun_3

Summary of Significant Accounting Policies Summary of Accounting Policies (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Jun. 30, 2019
Reclassification of Divisional Equity to APIC		$ 0
Internal Reorganization [Member]
Reclassification of Divisional Equity to APIC	$ 40

Divestitures and Other Transa_3

Divestitures and Other Transactions Separation Agreements (Details) $ in Millions	Sep. 30, 2020USD ($)
Accounts and Notes Receivable [Member] | DuPont de Nemours [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Indemnification Assets	$ 22
Accounts and Notes Receivable [Member] | Dow [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Indemnification Assets	15
Other Assets [Member] | DuPont de Nemours [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Indemnification Assets	50
Accrued and Other Current Liabilities [Member] | DuPont de Nemours [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Indemnified Liabilities	8
Accrued and Other Current Liabilities [Member] | Dow [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Indemnified Liabilities	102
Other noncurrent obligations | DuPont de Nemours [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Indemnified Liabilities	71
Other noncurrent obligations | Dow [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Indemnified Liabilities	$ 13

Divestitures and Other Transa_4

Divestitures and Other Transactions Divestitures and Other Transactions - ECP Divestiture (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Income (loss) from discontinued operations after income taxes	$ 0	$ 22	$ 1	$ (695)
ECP Disposal [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net sales				362
Cost of goods sold				259
Research and development expense				4
Selling, general and administrative expenses				9
Amortization of intangibles				23
Restructuring and asset related charges - net				2
Integration and separation costs				44
Other income - net				2
Income (loss) from discontinued operations before income taxes				23
Provision for income taxes on discontinued operations				4
Income (loss) from discontinued operations after income taxes				19
Depreciation				28
Capital expenditures				$ 16

Divestitures and Other Transa_5

Divestitures and Other Transactions Divestitures and Other Transactions - SP Divestiture (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Goodwill, Impairment Charge			$ 0	$ 1,102	[1]
Income (loss) from discontinued operations after income taxes	$ 0	$ 22	$ 1	(695)
Specialty Products Disposal [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net sales				5,030
Cost of goods sold				3,352
Research and development expense				204
Selling, general and administrative expenses				573
Amortization of intangibles				267
Restructuring and asset related charges - net				115
Integration and separation costs				253
Goodwill, Impairment Charge				1,102
Other income - net				38
Income (loss) from discontinued operations before income taxes				(798)
Provision for income taxes on discontinued operations				82
Income (loss) from discontinued operations after income taxes		$ 22		(880)
Depreciation				281
Capital expenditures				481
Equity Method Investment, Other than Temporary Impairment				$ 63
[1]	The cash flows for the nine months ended September 30, 2019 includes cash flows of EID's ECP and Specialty Products Entities.

Divestitures and Other Transa_6

Divestitures and Other Transactions Divested Ag Business (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Income (loss) from discontinued operations after income taxes	$ 0	$ 22	$ 1	$ (695)
Divested Ag Business [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Income (loss) from discontinued operations after income taxes				$ 80

Divestitures and Other Transa_7

Divestitures and Other Transactions Other Discontinued Operations (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Income (loss) from discontinued operations after income taxes	$ 0	$ 22	$ 1	$ (695)
Other discontinued operations [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Income (loss) from discontinued operations after income taxes				$ 86

Revenue Narrative (Details)

Revenue Narrative (Details) - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019	Sep. 30, 2019
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	$ 114	$ 108	$ 108
Minimum [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	1 year
Maximum [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	6 years

Revenue Contract Balances (Deta

Revenue Contract Balances (Details) - USD ($) $ in Millions		9 Months Ended
		Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Disaggregation of Revenue [Line Items]
Accounts and notes receivable - trade	[1]	$ 4,638	$ 5,372	$ 4,396
Contract assets - current	[2]	21	20	20
Contract assets - noncurrent	[3]	52	49	49
Deferred revenue recognized during the period		2,195	2,013
Accrued and Other Current Liabilities [Member]
Disaggregation of Revenue [Line Items]
Deferred Revenue	[4]	402	441	2,584
Other noncurrent obligations
Disaggregation of Revenue [Line Items]
Deferred Revenue	[5]	$ 106	$ 117	$ 108
[1]	Included in accounts and notes receivable - net in the interim Condensed Consolidated Balance Sheets.
[2]	Included in other current assets in the interim Condensed Consolidated Balance Sheets.
[3]	Included in other assets in the interim Condensed Consolidated Balance Sheets.
[4]	Included in accrued and other current liabilities in the interim Condensed Consolidated Balance Sheets.
[5]	Included in other noncurrent obligations in the interim Condensed Consolidated Balance Sheets.

Revenue Disaggregation of Reven

Revenue Disaggregation of Revenue - Principal Product Groups (Details) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Disaggregation of Revenue [Line Items]
Net Sales		$ 1,863	$ 1,911	$ 11,010	$ 10,863
Seed [Member]
Disaggregation of Revenue [Line Items]
Net Sales		523	681	6,516	6,347
Seed [Member] | Corn [Member]
Disaggregation of Revenue [Line Items]
Net Sales		303	372	4,224	4,149
Seed [Member] | Soybean [Member]
Disaggregation of Revenue [Line Items]
Net Sales		116	168	1,382	1,297
Seed [Member] | Other oilseeds [Member]
Disaggregation of Revenue [Line Items]
Net Sales		62	44	529	469
Seed [Member] | Other [Member]
Disaggregation of Revenue [Line Items]
Net Sales		42	97	381	432
Crop Protection [Member]
Disaggregation of Revenue [Line Items]
Net Sales		1,340	1,230	4,494	4,516
Crop Protection [Member] | Other [Member]
Disaggregation of Revenue [Line Items]
Net Sales	[1]	101	81	247	253
Crop Protection [Member] | Herbicides [Member]
Disaggregation of Revenue [Line Items]
Net Sales	[1]	583	574	2,315	2,338
Crop Protection [Member] | Insecticides [Member]
Disaggregation of Revenue [Line Items]
Net Sales	[1]	395	330	1,218	1,158
Crop Protection [Member] | Fungicides [Member]
Disaggregation of Revenue [Line Items]
Net Sales	[1]	$ 261	$ 245	$ 714	$ 767
[1]	Prior periods have been reclassified to conform to current period presentation.

Revenue Disaggregation of Rev_2

Revenue Disaggregation of Revenue - Geography (Details) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Disaggregation of Revenue [Line Items]
Net Sales		$ 1,863	$ 1,911	$ 11,010	$ 10,863
Seed [Member]
Disaggregation of Revenue [Line Items]
Net Sales		523	681	6,516	6,347
Seed [Member] | North America
Disaggregation of Revenue [Line Items]
Net Sales	[1]	97	226	4,290	4,238
Seed [Member] | EMEA
Disaggregation of Revenue [Line Items]
Net Sales	[2]	117	122	1,262	1,200
Seed [Member] | Latin America
Disaggregation of Revenue [Line Items]
Net Sales		246	271	668	636
Seed [Member] | Asia Pacific
Disaggregation of Revenue [Line Items]
Net Sales		63	62	296	273
Crop Protection [Member]
Disaggregation of Revenue [Line Items]
Net Sales		1,340	1,230	4,494	4,516
Crop Protection [Member] | North America
Disaggregation of Revenue [Line Items]
Net Sales	[1]	390	397	1,528	1,562
Crop Protection [Member] | EMEA
Disaggregation of Revenue [Line Items]
Net Sales	[2]	198	183	1,163	1,136
Crop Protection [Member] | Latin America
Disaggregation of Revenue [Line Items]
Net Sales		559	491	1,086	1,144
Crop Protection [Member] | Asia Pacific
Disaggregation of Revenue [Line Items]
Net Sales		$ 193	$ 159	$ 717	$ 674
[1]	Represents U.S. & Canada.
[2]	Europe, Middle East, and Africa ("EMEA").

Restructuring and Asset Relat_3

Restructuring and Asset Related Charges Execute to Win Productivity Program (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Restructuring Cost and Reserve [Line Items]
Restructuring and Asset related charges, net	$ 49	$ 46	$ 298	$ 167
Execute to Win Productivity Program [Domain]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	185		185
Restructuring Reserve, Beginning Balance			0
Payments for Restructuring			(8)
Asset write-offs and adjustments			(82)
Asset Retirement Obligation	29		29
Restructuring Reserve, Ending Balance	44		44
Restructuring and Asset related charges, net	30		134
Execute to Win Productivity Program [Domain] | Severance and Related Benefit Costs
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	60		60
Future Cash Payments	85		85
Restructuring Reserve, Beginning Balance			0
Payments for Restructuring			(5)
Asset write-offs and adjustments			0
Restructuring Reserve, Ending Balance	41		41
Restructuring and Asset related charges, net	0		46
Execute to Win Productivity Program [Domain] | Asset Related Charges [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	125		125
Restructuring Reserve, Beginning Balance			0
Payments for Restructuring			(3)
Asset write-offs and adjustments			(82)
Restructuring Reserve, Ending Balance	3		3
Restructuring and Asset related charges, net	30		88
Execute to Win Productivity Program [Domain] | Asset Retirement Obligation Costs [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	30		30
Execute to Win Productivity Program [Domain] | Seed [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	15		15
Restructuring and Asset related charges, net	0		3
Execute to Win Productivity Program [Domain] | Crop Protection [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	110		110
Restructuring and Asset related charges, net	30		85
Execute to Win Productivity Program [Domain] | Corporate
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	60		60
Restructuring and Asset related charges, net	$ 0		$ 46
Minimum [Member] | Execute to Win Productivity Program [Domain]
Restructuring Cost and Reserve [Line Items]
Ceased Operations			12 months
Maximum [Member] | Execute to Win Productivity Program [Domain]
Restructuring Cost and Reserve [Line Items]
Ceased Operations			24 months

Restructuring and Asset Relat_4

Restructuring and Asset Related Charges DowDuPont Cost Synergy Program (Details) - USD ($) $ in Millions		3 Months Ended		9 Months Ended		37 Months Ended
		Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020
Restructuring Cost and Reserve [Line Items]
Restructuring and Asset related charges, net		$ 49	$ 46	$ 298	$ 167
DowDuPont Cost Synergy Program [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve, Beginning Balance				69
Payments for Restructuring				(22)
Restructuring Reserve, Ending Balance		45		45		$ 45
Restructuring and Asset related charges, net		9	(8)	6	114	851
DowDuPont Cost Synergy Program [Member] | Severance and Related Benefit Costs
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve, Beginning Balance				29
Payments for Restructuring				(16)
Restructuring Reserve, Ending Balance		13		13		13
Restructuring and Asset related charges, net		0	0	0	14	319
DowDuPont Cost Synergy Program [Member] | Costs Associated with Exit and Disposal Activities
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve, Beginning Balance	[1]			40
Payments for Restructuring	[1]			(8)
Restructuring Reserve, Ending Balance	[1]	32		32		32
Restructuring and Asset related charges, net		0	0	0	69	193
DowDuPont Cost Synergy Program [Member] | Asset Related Charges [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Asset related charges, net		9	(8)	6	31	$ 339
DowDuPont Cost Synergy Program [Member] | Seed [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Asset related charges, net		(1)	(7)	(7)	66
DowDuPont Cost Synergy Program [Member] | Crop Protection [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Asset related charges, net		10	(1)	13	28
DowDuPont Cost Synergy Program [Member] | Corporate
Restructuring Cost and Reserve [Line Items]
Restructuring and Asset related charges, net		$ 0	$ 0	$ 0	$ 20
[1]	Relates primarily to contract terminations charges.

Restructuring and Asset Relat_5

Restructuring and Asset Related Charges Narrative (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2020
Other Asset Related [Member]
Restructuring Cost and Reserve [Line Items]
Accelerated Prepaid Royalty Amortization Expense	$ 10	$ 158

Asset Impairments Narrative (De

Asset Impairments Narrative (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2019
Restructuring Cost and Reserve [Line Items]
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)	$ 54	$ 54
Impairment of Intangible Assets Indefinite lived Excluding Goodwill After Tax	41	$ 41
In Process Research and Development [Member]
Restructuring Cost and Reserve [Line Items]
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)	54
Impairment of Intangible Assets Indefinite lived Excluding Goodwill After Tax	$ 41

Related Party Transactions Dow

Related Party Transactions Dow Intercompany Transactions (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Dow [Member]
Related Party Transaction [Line Items]
Purchases from Historical Dow and affiliates				$ 42
Corteva [Member] | EID [Member]
Related Party Transaction [Line Items]
Interest Expense, Related Party	$ 19	$ 39	$ 82	$ 69

Related Party Transactions Tran

Related Party Transactions Transactions with DowDuPont (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Mar. 31, 2019	Sep. 30, 2020	Sep. 30, 2019
Related Party Transaction [Line Items]
Distributions to DowDuPont	$ 317	$ 0	$ 317	[1]
DowDuPont [Member]
Related Party Transaction [Line Items]
Distributions to DowDuPont			$ 317
[1]	The cash flows for the nine months ended September 30, 2019 includes cash flows of EID's ECP and Specialty Products Entities.

Supplementary Information Other

Supplementary Information Other Income (Expense) - Net (Details) - USD ($) $ in Millions		3 Months Ended			9 Months Ended
		Sep. 30, 2020	Sep. 30, 2019		Sep. 30, 2020	Sep. 30, 2019
Equity in losses of affiliates - net		$ 0	$ (3)		$ (3)	$ (8)
Net gain (loss) on sales of businesses and other assets	[1]	1	2		(29)	(9)
Net exchange gains (losses)	[2]	(67)	(11)		(127)	(70)
Non-operating pension and other post employment benefit credit	[3]	93	47		275	144
Miscellaneous expenses - net	[4]	(8)	11		(34)	(13)
Other income - net		30	59		120	90
Interest income		11	13		38	46
Hedging Program [Member]
Net exchange gains (losses)		(6)	55		173	(11)
Subsidiary Monetary Position
Net exchange gains (losses)	[2]	(61)	(66)		(300)	(59)
Argentine Peso Devaluation [Member] | Hedging Program [Member]
Net exchange gains (losses)		(26)	(33)		(56)	(42)
Corporate | Argentine Peso Devaluation [Member] | Hedging Program [Member]
Net exchange gains (losses)						33
Segment Reconciling Items [Member]
Net exchange gains (losses)		67	(22)	[5]	127	37	[5]
Non-operating pension and other post employment benefit credit		(73)	(32)		(237)	(106)
Gain (Loss) on Disposition of Assets	[6],[7]					(24)
Interest income		$ (11)	$ (13)		(38)	(46)
Segment Reconciling Items [Member] | Crop Protection [Member]
Gain (Loss) on Disposition of Assets					$ (53)
Sale of JV [Member] | Segment Reconciling Items [Member] | Crop Protection [Member]
Gain (Loss) on Disposition of Assets						0
Sale of JV [Member] | Segment Reconciling Items [Member] | Seed [Member]
Gain (Loss) on Disposition of Assets	[6],[7]					(24)
Sale of JV [Member] | Segment Reconciling Items [Member] | Corporate
Gain (Loss) on Disposition of Assets						$ 0
[1]	The nine months ended September 30, 2020 includes a loss of $(53) million relating to the expected sale of the La Porte site, for which the company signed an agreement in 2020. The nine months ended September 30, 2019 includes a loss of $(24) million relating to DAS’s sale of a joint venture related to synergy actions.
[2]	Includes net pre-tax exchange losses of $(26) million and $(56) million for the three and nine months ended September 30, 2020, respectively, and $(33) million and $(42) million for the three and nine months ended September 30, 2019, respectively, associated with the devaluation of the Argentine peso.
[3]	Includes non-service related components of net periodic benefit credits (costs) (interest cost, expected return on plan assets, amortization of unrecognized (gain) loss, amortization of prior service benefit and settlement (loss) gain).
[4]	Miscellaneous income (expenses) - net, includes losses related to loss on sale of receivables, bank charges and other items.
[5]	Excludes a $(33) million foreign exchange loss for the three and nine months ended September 30, 2019 associated with the devaluation of the Argentine peso, as it is included within significant items. See Note 7 - Supplementary Information for additional information
[6]	Includes a loss recorded in other income - net related to DAS’s sale of a joint venture related to synergy actions.
[7]	The nine months ended September 30, 2019 is presented on a pro forma basis, prepared in accordance with Article 11 of Regulation S-X.

Supplementary Information Forei

Supplementary Information Foreign Currency Exchange Gain (Loss) (Details) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Foreign Currency Exchange Gain (Loss) [Line Items]
Pre-tax exchange (losses) gains - net	[1]	$ (67)	$ (11)	$ (127)	$ (70)
Foreign Currency Transaction (Loss) Gain Tax (Expense) Benefit		18	(12)	3	0
Foreign Currency Transaction (Loss) Gain After Tax		(49)	(23)	(124)	(70)
Subsidiary Monetary Position
Foreign Currency Exchange Gain (Loss) [Line Items]
Pre-tax exchange (losses) gains - net	[1]	(61)	(66)	(300)	(59)
Foreign Currency Transaction (Loss) Gain Tax (Expense) Benefit		16	1	44	(2)
Foreign Currency Transaction (Loss) Gain After Tax		(45)	(65)	(256)	(61)
Hedging Program [Member]
Foreign Currency Exchange Gain (Loss) [Line Items]
Pre-tax exchange (losses) gains - net		(6)	55	173	(11)
Foreign Currency Transaction (Loss) Gain Tax (Expense) Benefit		2	(13)	(41)	2
Foreign Currency Transaction (Loss) Gain After Tax		(4)	42	132	(9)
Hedging Program [Member] | Argentine Peso Devaluation [Member]
Foreign Currency Exchange Gain (Loss) [Line Items]
Pre-tax exchange (losses) gains - net		$ (26)	$ (33)	$ (56)	(42)
Hedging Program [Member] | Argentine Peso Devaluation [Member] | Corporate
Foreign Currency Exchange Gain (Loss) [Line Items]
Pre-tax exchange (losses) gains - net					$ 33
[1]	Includes net pre-tax exchange losses of $(26) million and $(56) million for the three and nine months ended September 30, 2020, respectively, and $(33) million and $(42) million for the three and nine months ended September 30, 2019, respectively, associated with the devaluation of the Argentine peso.

Supplementary Information Recon

Supplementary Information Reconciliation of Cash, Cash Equivalents and Restricted Cash (Details) - USD ($) $ in Millions	Sep. 30, 2020		Dec. 31, 2019	Sep. 30, 2019		Jun. 01, 2019	Dec. 31, 2018	[2]
Restricted Cash and Cash Equivalents Items [Line Items]
Cash and cash equivalents	$ 2,768		$ 1,764	$ 1,980
Restricted Cash						$ 319
Cash, Cash Equivalents and Restricted Cash, Total Company	3,122	[1]	2,173	2,400	[1],[2]		$ 5,024
Other Current Assets [Member]
Restricted Cash and Cash Equivalents Items [Line Items]
Restricted Cash	$ 354		$ 409	$ 420
[1]	See page 20 for reconciliation of cash and cash equivalents and restricted cash presented in interim Condensed Consolidated Balance Sheets to total cash, cash equivalents and restricted cash presented in the interim Condensed Consolidated Statements of Cash Flows.
[2]	The cash flows for the nine months ended September 30, 2019 includes cash flows of EID's ECP and Specialty Products Entities.

Income Taxes Income Tax Narrati

Income Taxes Income Tax Narrative (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Income Tax Disclosure [Abstract]
Tax charge related to U.S. state blended tax rate changes associated with the Internal Reorganizations			$ 146
Tax benefit related to an internal legal entity restructuring associated with the Internal Reorganizations			102
Tax benefit related to the impact of recent tax law enactment in foreign jurisdictions		$ 14
Tax benefit related to an elective change in accounting method for the impact of the Act's foreign tax provisions		$ 51
Tax benefit related to the enactment of the Swiss Tax Reform	$ 38		38
Other Tax Benefit			21
Tax benefit (charge) related to application of the Act's foreign tax provisions	$ 13		$ (83)

Earnings Per Share Narrative (D

Earnings Per Share Narrative (Details) shares in Thousands	Jun. 01, 2019shares
Corteva [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Common Stock, Shares, Issued	748,815

Earnings Per Share Net Income f

Earnings Per Share Net Income for Earnings Per Share Calculations - Basic and Diluted (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Earnings Per Share [Abstract]
Income (loss) from continuing operations after income taxes	$ (390)	$ (527)	$ 657	$ (228)
Net income (loss) Attributable to Noncontrolling Interest, Continuing Operations	2	(11)	18	10
Net income (loss) from Continuing Operations Available to Common Shareholders	(392)	(516)	639	(238)
Income (loss) from discontinued operations after income taxes	0	22	1	(695)
Income from Discontinued Operations, Attributable to Noncontrolling Interest	0	0	0	5
Net (Loss) Income from Discontinued Operations Available to Common Shareholders	0	22	1	(700)
Net income (loss) Available to Common Stockholders	$ (392)	$ (494)	$ 640	$ (938)

Earnings Per Share Earnings Per

Earnings Per Share Earnings Per Share Calculations - Basic (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Earnings Per Share [Abstract]
Basic earnings (loss) per share of common stock from continuing operations	$ (0.52)	$ (0.69)	$ 0.85	$ (0.32)
Basic earnings (loss) per share of common stock from discontinued operations	$ 0	$ 0.03	$ 0	$ (0.93)
Basic earnings (loss) per share of common stock	$ (0.52)	$ (0.66)	$ 0.85	$ (1.25)

Earnings Per Share Earnings P_2

Earnings Per Share Earnings Per Share Calculations - Diluted (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Earnings Per Share [Abstract]
Diluted earnings (loss) per share of common stock from continuing operations	$ (0.52)	$ (0.69)	$ 0.85	$ (0.32)
Diluted earnings (loss) per share of common stock from discontinued operations	$ 0	$ 0.03	$ 0	$ (0.93)
Diluted earnings (loss) per share of common stock	$ (0.52)	$ (0.66)	$ 0.85	$ (1.25)

Earnings Per Share Share Count

Earnings Per Share Share Count Information (Details) - shares		3 Months Ended		9 Months Ended
		Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019	Jun. 01, 2019
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Weighted Average Common Shares - basic	[1]	749,500,000	749,500,000	749,500,000	749,400,000
Dilutive effect of equity compensation plans	[2]	0	0	2,500,000	0
Weighted Average Common Shares - diluted		749,500,000	749,500,000	752,000,000	749,400,000
Potential shares of common stock excluded from EPS calculations	[3]	14,600,000	13,800,000	9,700,000	13,800,000
Common Stock, Shares Authorized		1,666,667,000	1,666,667,000	1,666,667,000	1,666,667,000	1,666,667,000
Corteva [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Shares in which vesting conditions were met							600,000
Common Stock, Shares, Issued							748,815,000
Corteva [Member] | Rounded Amount [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Common Stock, Shares, Issued							748,800,000
[1]	Share amounts for all periods prior to the Corteva Distribution were based on 748.8 million shares of Corteva, Inc. common stock distributed to holders of DowDuPont's common stock on June 1, 2019, plus 0.6 million of additional shares in which accelerated vesting conditions have been met.
[2]	Diluted earnings per share considers the impact of potentially dilutive securities except in periods in which there is a loss because the inclusion of the potential common shares would have an anti-dilutive effect.
[3]	These outstanding potential shares of common stock relating to stock options, restricted stock units and performance-based restricted stock units were excluded from the calculation of diluted earnings per share because the effect of including them would have been anti-dilutive.

Accounts and Notes Receivable_3

Accounts and Notes Receivable (Details) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts Receivable - trade	[1]	$ 3,231	$ 3,969	$ 3,231	$ 3,969	$ 4,225
Notes receivable - trade	[1],[2]	1,407	1,403	1,407	1,403	171
Other	[3]	989	1,202	989	1,202	1,132
Accounts and notes receivable - net		5,627	6,574	5,627	6,574	5,528
Accounts Receivable, Allowance for Credit Loss, Current		210	170	210	170	174
Due from Affiliates		92	127	92	127	119
Factoring Agreement [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Trade Receivables Sold		44	13	221	97
Trade receivables sold the remain outstanding with an element of recourse		178	61	178	61	$ 171
Loss on Sale of Accounts Receivable		$ 11	$ 4	$ 49	$ 41
[1]	Accounts receivable – trade and notes receivable - trade are net of allowances of $210 million at September 30, 2020, $174 million at December 31, 2019, and $170 million at September 30, 2019. The allowance at September 30, 2020 is equal to the expected credit losses and was developed using a loss-rate method. The allowance at December 31, 2019 and September 30, 2019 is equal to the estimated uncollectible amounts and is based on historical collection experience, current economic and market conditions, and review of the current status of customers' accounts.
[2]	Notes receivable – trade primarily consists of receivables for deferred payment loan programs for the sale of seed products to customers. These loans have terms of one year or less and are primarily concentrated in North America. The company maintains a rigid pre-approval process for extending credit to customers in order to manage overall risk and exposure associated with credit losses. As of September 30, 2020, December 31, 2019, and September 30, 2019 there were no significant impairments related to current loan agreements.
[3]	Other includes receivables in relation to indemnification assets, value added tax, general sales tax and other taxes. No individual group represents more than 10 percent of total receivables. In addition, Other includes amounts due from nonconsolidated affiliates of $92 million, $119 million, and $127 million as of September 30, 2020, December 31, 2019, and September 30, 2019, respectively.

Accounts and Notes Receivable A

Accounts and Notes Receivable Allowance Rollforward (Details) $ in Millions	9 Months Ended
	Sep. 30, 2020USD ($)
Receivables [Abstract]
Accounts Receivable, Allowance for Credit Loss, Beginning Balance	$ 174
Additions charged to expenses	153
Write-offs charged against allowance	(6)
Recoveries collected	(99)
Other deductions against allowance	(12)
Accounts Receivable, Allowance for Credit Loss, Ending Balance	$ 210

Inventories Schedule of Invento

Inventories Schedule of Inventory (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2019	Sep. 30, 2020	Dec. 31, 2019	Sep. 01, 2017
Inventory [Line Items]
Finished Products	$ 2,295	$ 2,295	$ 2,074	$ 2,684
Semi-finished Products	1,691	1,691	1,878	1,850
Raw Materials and Supplies	417	417	422	498
Total inventories	4,403	4,403	$ 4,374	$ 5,032
Merger with Dow [Member]
Inventory [Line Items]
Business Combination, Fair Value Step Up Of Acquired Inventory					$ 2,297
Amortization of inventory step up included in COGS	$ 15	$ 272

Property, Plant and Equipment S

Property, Plant and Equipment Schedule of Property, Plant and Equipment (Details) - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019	Sep. 30, 2019
Property, Plant and Equipment [Line Items]
Accumulated Depreciation	$ (3,712)	$ (3,326)	$ (3,186)

Other Intangible Assets Other I

Other Intangible Assets Other Intangible Assets (Details) - USD ($) $ in Millions		3 Months Ended	9 Months Ended
		Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross		$ 4,474	$ 10,735	$ 4,474	$ 10,750
Finite-Lived Intangible Assets, Accumulated Amortization		(1,043)	(1,702)	(1,043)	(1,207)
Finite-Lived Intangible Assets, Net		3,431	9,033	3,431	9,543
Indefinite-lived Intangible Assets (Excluding Goodwill)		8,236	1,881	8,236	1,881
Intangible Assets, Gross (Excluding Goodwill)		12,710	12,616	12,710	12,631
Total other intangible assets		11,667	10,914	11,667	11,424
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)		54		54
Impairment of Intangible Assets Indefinite lived Excluding Goodwill After Tax		41		41
Trade Names [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Indefinite-lived Intangible Assets (Excluding Goodwill)		1,871	1,871	1,871	1,871
In Process Research and Development [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Indefinite-lived Intangible Assets (Excluding Goodwill)		100	10	100	10
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)		54
Impairment of Intangible Assets Indefinite lived Excluding Goodwill After Tax		41
Germplasm [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Indefinite-lived Intangible Assets (Excluding Goodwill)	[1]	6,265		6,265
Germplasm [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	[1]		6,265		6,265
Finite-Lived Intangible Assets, Accumulated Amortization	[1]		(253)		(63)
Finite-Lived Intangible Assets, Net	[1]		$ 6,012		6,202
Finite-Lived Intangible Asset, Useful Life			25 years
Customer-Related Intangible Assets [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross		1,969	$ 1,966	1,969	1,977
Finite-Lived Intangible Assets, Accumulated Amortization		(238)	(352)	(238)	(268)
Finite-Lived Intangible Assets, Net		1,731	1,614	1,731	1,709
Developed Technology Rights [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross		1,463	1,463	1,463	1,463
Finite-Lived Intangible Assets, Accumulated Amortization		(332)	(499)	(332)	(370)
Finite-Lived Intangible Assets, Net		1,131	964	1,131	1,093
Trademarks and Trade Names [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross		166	161	166	166
Finite-Lived Intangible Assets, Accumulated Amortization		(84)	(86)	(84)	(86)
Finite-Lived Intangible Assets, Net		82	75	82	80
Favorable Supply Contract [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross		475	475	475	475
Finite-Lived Intangible Assets, Accumulated Amortization		(183)	(279)	(183)	(207)
Finite-Lived Intangible Assets, Net		292	196	292	268
Other Intangible Assets [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	[2]	401	405	401	404
Finite-Lived Intangible Assets, Accumulated Amortization	[2]	(206)	(233)	(206)	(213)
Finite-Lived Intangible Assets, Net	[2]	$ 195	$ 172	$ 195	$ 191
[1]	Beginning on October 1, 2019, the company changed its indefinite life assertion of the germplasm assets to definite lived with a useful life of 25 years.  This change is the result of a more focused development effort of new seed products coupled with an intent to out license select germplasm on a non-exclusive basis. Prior to changing the useful life of the germplasm assets, the company tested the assets for impairment under ASC 350 - Intangibles, Goodwill and Other, concluding the assets were not impaired.
[2]	Primarily consists of sales and farmer networks, marketing and manufacturing alliances and noncompetition agreements.

Other Intangible Assets Future

Other Intangible Assets Future Amortization Expense (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Finite-Lived Intangible Assets [Line Items]
Amortization expense	$ 162	$ 100	$ 501	$ 314
Continuing Operations [Member]
Finite-Lived Intangible Assets [Line Items]
Pre-tax amortization expense, remainder of 2020	160		160
Pre-tax amortization expense, 2021	644		644
Pre-tax amortization expense, 2022	623		623
Pre-tax amortization expense, 2023	544		544
Pre-tax amortization expense, 2024	530		530
Pre-tax amortization expense, 2025	$ 492		$ 492

Short-Term Borrowings, Long-T_3

Short-Term Borrowings, Long-Term Debt and Available Credit Facilities Short-term borrowings and finance lease obligations (Details) - USD ($) $ in Millions	Sep. 30, 2020	Feb. 29, 2020	Dec. 31, 2019	Sep. 30, 2019
Short-term Debt [Line Items]
Long-term Debt Payable within one year	$ 1		$ 1	$ 4
Finance Lease, Liability, Current	1		4	4
Short-term borrowings and finance lease obligations	$ 2,142		$ 7	$ 3,604
Short-term Debt, Weighted Average Interest Rate, at Point in Time	0.90%		6.70%	2.60%
Commercial Paper [Member]
Short-term Debt [Line Items]
Short-term borrowings	$ 926		$ 0	$ 2,432
Other loans - various currencies [Member]
Short-term Debt [Line Items]
Short-term borrowings	39		2	35
Repurchase Agreements [Member]
Short-term Debt [Line Items]
Short-term borrowings		$ 1,300
Repurchase Agreements [Member] | Securities Sold under Agreements to Repurchase [Member]
Short-term Debt [Line Items]
Short-term borrowings	$ 1,175		$ 0	$ 1,129

Short-Term Borrowings, Long-T_4

Short-Term Borrowings, Long-Term Debt and Available Credit Facilities Long-term Debt (Details) - USD ($) $ in Millions	Sep. 30, 2020	May 31, 2020	Dec. 31, 2019	Sep. 30, 2019
Debt Instrument [Line Items]
Finance Lease, Liability, Noncurrent	$ 4		$ 5	$ 6
Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net	11		0	0
Long-term Debt Payable within one year	1		1	4
Long-term Debt and Lease Obligation	1,102		115	116
Senior Notes Due 2025 [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross		$ 500
Debt Instrument, Interest Rate, Stated Percentage		1.70%
Medium-term Notes [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross	$ 109		$ 109	$ 110
Long-term Debt, Weighted Average Interest Rate, at Point in Time	0.00%		1.61%	1.88%
Senior Notes Due 2030 [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross		$ 500
Debt Instrument, Interest Rate, Stated Percentage		2.30%
Notes Maturing 2025 [Domain] | Loans Payable [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross	$ 500		$ 0	$ 0
Long-term Debt, Weighted Average Interest Rate, at Point in Time	1.70%		0.00%	0.00%
Notes Maturing 2030 [Domain] | Loans Payable [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross	$ 500		$ 0	$ 0
Long-term Debt, Weighted Average Interest Rate, at Point in Time	2.30%		0.00%	0.00%
Foreign Currency Loans [Member] | Loans Payable [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross	$ 1		$ 2	$ 4
Fair Value, Inputs, Level 2 [Member]
Debt Instrument [Line Items]
Long-term Debt, Fair Value	$ 1,164		$ 119	$ 123

Short-Term Borrowings, Long-T_5

Short-Term Borrowings, Long-Term Debt and Available Credit Facilities Repurchase Facility and Revolving Credit Facilities (Details) $ in Millions	9 Months Ended			36 Months Ended	60 Months Ended
	Sep. 30, 2020USD ($)	Sep. 30, 2019USD ($)		Nov. 13, 2021	Nov. 13, 2023	Mar. 31, 2020USD ($)	Feb. 29, 2020USD ($)	Dec. 31, 2019USD ($)	Nov. 13, 2018USD ($)
Line of Credit Facility [Line Items]
Proceeds from debt	$ 2,434	$ 1,001	[1]
Repayments of Long-term Debt	879	6,803	[1]
Repurchase Agreements [Member]
Line of Credit Facility [Line Items]
Short-term borrowings							$ 1,300
Revolving Credit Facilities due 2024 [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity									$ 3,000
Revolving Credit Facilities due 2022 [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity									$ 3,000
Long-term Line of Credit						$ 500
Line of Credit Facility, Remaining Borrowing Capacity	3,000
Securities Sold under Agreements to Repurchase [Member] | Repurchase Agreements [Member]
Line of Credit Facility [Line Items]
Short-term borrowings	1,175	$ 1,129						$ 0
Percentage of outstanding amounts borrowed utilized as collateral							105.00%
Interest rate in addition to LIBOR							0.75%
Revolving Credit Facilities due 2022 [Member]
Line of Credit Facility [Line Items]
Ratio of Indebtedness to Net Capital									0.60
Accounts and Notes Receivable [Member] | Securities Sold under Agreements to Repurchase [Member] | Repurchase Agreements [Member]
Line of Credit Facility [Line Items]
Pledged Financial Instruments, Not Separately Reported, Loans Receivable Pledged as Collateral	$ 1,234
Forecast [Member] | Revolving Credit Facilities due 2024 [Member]
Line of Credit Facility [Line Items]
Debt Instrument, Term					5 years
Forecast [Member] | Revolving Credit Facilities due 2022 [Member]
Line of Credit Facility [Line Items]
Debt Instrument, Term				3 years
[1]	The cash flows for the nine months ended September 30, 2019 includes cash flows of EID's ECP and Specialty Products Entities.

Commitments and Contingent Li_3

Commitments and Contingent Liabilities Guarantee Narrative (Details) - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019	Sep. 30, 2019
Guarantor Obligations [Line Items]
Guarantee Obligations	$ 96	$ 97	$ 80
Factoring Agreement [Member]
Guarantor Obligations [Line Items]
Guarantee Obligations	20	16	11
Agreements with lenders to provide financing for select customers [Member]
Guarantor Obligations [Line Items]
Accounts Receivable, after Allowance for Credit Loss	637	$ 27	$ 596
Current Portion [Member]
Guarantor Obligations [Line Items]
Guarantee Obligations	$ 1

Commitments and Contingent Li_4

Commitments and Contingent Liabilities Chemours (Details) - USD ($) $ in Millions	Jul. 01, 2015	Jul. 06, 2022	Sep. 30, 2020
PFOA Matters: Multi-District Litigation [Member]
Loss Contingencies [Line Items]
Loss Contingency, Limited Sharing of Potential Future Liabilities, Period		5 years
Additional annual PFOA liabilities for the next five years paid by Corteva			$ 25
Chemours [Member] | PFOA Matters: Multi-District Litigation [Member]
Loss Contingencies [Line Items]
Additional annual PFOA liabilities for the next five years paid by Chemours			25
Chemours [Member] | Accounts and Notes Receivable [Member]
Loss Contingencies [Line Items]
Indemnification Asset for liabilities indemnified by Chemours			65
Chemours [Member] | Other Assets [Member]
Loss Contingencies [Line Items]
Indemnification Asset for liabilities indemnified by Chemours			274
Chemours [Member] | Accrued and Other Current Liabilities [Member]
Loss Contingencies [Line Items]
Indemnified Liabilities for liabilities indemnified by Chemours			(65)
Chemours [Member] | Other noncurrent obligations
Loss Contingencies [Line Items]
Indemnified Liabilities for liabilities indemnified by Chemours			$ (274)
Chemours [Member]
Loss Contingencies [Line Items]
Proceeds from Dividends Received	$ 3,910

Commitments and Contingent Li_5

Commitments and Contingent Liabilities DuPont (Details)	Sep. 30, 2020USD ($)
PFAS [Member] | Minimum [Member]
Loss Contingencies [Line Items]
Corteva and DuPont stray liability threshold for PFAS	$ 1
PFAS [Member] | Minimum [Member] | Once $300 million threshold is met [Member]
Loss Contingencies [Line Items]
De minimis threshold	1,000,000
PFAS [Member] | Maximum [Member]
Loss Contingencies [Line Items]
Corteva and DuPont stray liability threshold for PFAS	300,000,000
DuPont de Nemours [Member]
Loss Contingencies [Line Items]
Amount credited to each company's threshold	$ 150,000,000
Corteva [Member]
Loss Contingencies [Line Items]
Stray liability sharing percentage	29.00%
Corteva [Member] | PFAS [Member]
Loss Contingencies [Line Items]
Stray liability sharing percentage for PFAS	50.00%
Corteva [Member] | DuPont de Nemours [Member]
Loss Contingencies [Line Items]
Stray liability threshold	$ 200,000,000
DuPont de Nemours [Member]
Loss Contingencies [Line Items]
Stray liability sharing percentage	71.00%
DuPont de Nemours [Member] | PFAS [Member]
Loss Contingencies [Line Items]
Stray liability sharing percentage for PFAS	50.00%
DuPont de Nemours [Member] | DuPont de Nemours [Member]
Loss Contingencies [Line Items]
Stray liability threshold	$ 200,000,000
Corteva and DuPont stray liability threshold for PFAS	$ 200,000,000

Commitments and Contingent Li_6

Commitments and Contingent Liabilities PFOA / Leach Settlement (Details)	3 Months Ended	9 Months Ended	12 Months Ended	105 Months Ended
	Jun. 30, 2017USD ($)	Sep. 30, 2020USD ($)lawsuits	Dec. 31, 2004USD ($)	Sep. 30, 2020USD ($)lawsuits	Jan. 01, 2012
PFOA Matters: Drinking Water Actions [Member]
Loss Contingencies [Line Items]
Binding Settlement Agreement Class Size			80,000
Loss Contingency, Number Of Water Districts Receiving Water Treatment					6
Litigation Settlement, Liability For Medical Monitoring Program, Threshold			$ 235,000,000
Litigation Settlement, Medical Monitoring Program, Escrow Account, Disbursements To Date				$ 2,000,000
Escrow Balance		$ 1,000,000		$ 1,000,000
PFOA Matters: Drinking Water Actions [Member] | WEST VIRGINIA AND OHIO [Domain]
Loss Contingencies [Line Items]
Loss Contingency, Pending Claims, Number		58		58
Loss Contingency, Threatened Claims, Number		33		33
PFOA Matters: Drinking Water Actions [Member] | WEST VIRGINIA AND OHIO [Domain] | Scheduled for trial [Member]
Loss Contingencies [Line Items]
Loss Contingency, Pending Claims, Number		6		6
PFOA Matters: Drinking Water Actions [Member] | WEST VIRGINIA AND OHIO [Domain] | Compensatory damages [Member]
Loss Contingencies [Line Items]
Litigation Settlement, Amount Awarded to Other Party		$ 40,000,000
PFOA Matters: Drinking Water Actions [Member] | WEST VIRGINIA AND OHIO [Domain] | Loss of consortium [Member]
Loss Contingencies [Line Items]
Litigation Settlement, Amount Awarded to Other Party		$ 10,000,000
PFOA Matters: Multi-District Litigation [Member]
Loss Contingencies [Line Items]
Disease Categories for MDL		6		6
Lawsuits alleging personal injury filed | lawsuits		3,550		3,550
Litigation Settlement, Amount Awarded to Other Party	$ 670,700,000
Chemours [Member] | PFOA Matters [Member]
Loss Contingencies [Line Items]
Indemnification Asset for liabilities indemnified by Chemours		$ 21,000,000		$ 21,000,000
Indemnified Liabilities for liabilities indemnified by Chemours		$ 21,000,000		$ 21,000,000

Commitments and Contingent Li_7

Commitments and Contingent Liabilities Other PFOA Matters / Fayetteville (Details)	9 Months Ended
	Sep. 30, 2020lawsuits
Firefighting Foam [Member]
Loss Contingencies [Line Items]
Loss Contingency, Pending Claims, Number	690
Personal injury cases [Member] | Firefighting Foam [Member]
Loss Contingencies [Line Items]
Loss Contingency, Pending Claims, Number	630
NEW YORK | PFOA Matters: Drinking Water Actions [Member]
Loss Contingencies [Line Items]
Loss Contingency, Pending Claims, Number	50
NEW JERSEY | PFOA Matters: Drinking Water Actions [Member]
Loss Contingencies [Line Items]
Loss Contingency, Pending Claims, Number	2
NEW JERSEY | Natural Resources Damages [Member]
Loss Contingencies [Line Items]
Loss Contingency, Pending Claims, Number	4
OHIO | PFOA Matters: Drinking Water Actions [Member]
Loss Contingencies [Line Items]
Loss Contingency, Pending Claims, Number	3
NORTH CAROLINA | PFOA Matters: Drinking Water Actions [Member]
Loss Contingencies [Line Items]
Loss Contingency, Number of Property Owners	200
Loss Contingency, Number of Additional Plaintiffs	100
Alabama Water Utility [Member] | Natural Resources Damages [Member]
Loss Contingencies [Line Items]
Loss Contingency, Pending Claims, Number	1

Commitments and Contingent Li_8

Commitments and Contingent Liabilities Environmental (Details) $ in Millions	Sep. 30, 2020USD ($)
Loss Contingencies [Line Items]
Indemnification Asset	$ 192
Accrual for Environmental Loss Contingencies	342	[1]
Accrual for Environmental Loss Contingencies, Potential Exposure in Excess of Accrual	610	[1]
Chemours related obligation subject to indemnification [Member]
Loss Contingencies [Line Items]
Indemnification Asset	158	[2],[3]
Accrual for Environmental Loss Contingencies	158	[1],[2],[3]
Accrual for Environmental Loss Contingencies, Potential Exposure in Excess of Accrual	284	[1],[2],[3]
Discontinued Operations [Member]
Loss Contingencies [Line Items]
Indemnification Asset		[2]
Other discontinued or divested business obligations [Member]
Loss Contingencies [Line Items]
Accrual for Environmental Loss Contingencies	83	[1],[2]
Accrual for Environmental Loss Contingencies, Potential Exposure in Excess of Accrual	219	[1],[2]
Environmental remediation liabilities primarily related to DuPont - subject to indemnity from DuPont [Member]
Loss Contingencies [Line Items]
Indemnification Asset	34	[3]
Accrual for Environmental Loss Contingencies	34	[1],[3]
Accrual for Environmental Loss Contingencies, Potential Exposure in Excess of Accrual	62	[1],[3]
Not subject to indemnification [Member]
Loss Contingencies [Line Items]
Indemnification Asset
Accrual for Environmental Loss Contingencies	67	[1]
Accrual for Environmental Loss Contingencies, Potential Exposure in Excess of Accrual	45	[1]
DuPont de Nemours [Member] | DuPont de Nemours [Member]
Loss Contingencies [Line Items]
Stray liability threshold	200
Superfund Sites [Member]
Loss Contingencies [Line Items]
Accrual for Environmental Loss Contingencies	52
Superfund Sites [Member] | Chemours [Member] | Indemnification Agreement [Member]
Loss Contingencies [Line Items]
Indemnification Asset	$ 30
[1]	Accrual balance represents management’s best estimate of the costs of remediation and restoration, although it is reasonably possible that the potential exposure, as indicated, could range above the amounts accrued, as there are inherent uncertainties in these estimates.
[2]	Represents liabilities that are subject the $200 million thresholds and sharing arrangements as discussed on page 28, under Corteva Separation Agreement.
[3]	The company has recorded an indemnification asset related to these accruals, including $30 million related to the Superfund sites.

Stockholders' Equity Common Sto

Stockholders' Equity Common Stock (Details) $ / shares in Units, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020USD ($)$ / sharesshares	Sep. 30, 2019USD ($)$ / sharesshares	Sep. 30, 2020USD ($)$ / sharesshares	Sep. 30, 2019USD ($)$ / sharesshares		Oct. 29, 2020$ / shares	Dec. 31, 2019$ / shares	Jun. 26, 2019USD ($)$ / shares	Jun. 01, 2019shares$ / shares
Class of Stock [Line Items]
Common Stock, Par Value | $ / shares	$ 0.01	$ 0.01	$ 0.01	$ 0.01		$ 0.01	$ 0.01
Common Stock, Shares, Outstanding, Beginning Balance			748,577,000
Common Stock, Shares, Outstanding, Ending Balance	747,492,000	748,390,000	747,492,000	748,390,000
Stock Repurchase Program, Authorized Amount | $								$ 1,000
Repurchase of Common Stock | $	$ 33	$ 25	$ 83	$ 25	[1]
Corteva [Member]
Class of Stock [Line Items]
Common Stock, Shares, Issued									748,815,000
Common Stock, Par Value | $ / shares	$ 0.01		$ 0.01					$ 0.01	$ 0.01
Common Stock, Shares, Outstanding, Beginning Balance			748,577,000
Common Stock, Shares, Issued			1,940,000
Stock Repurchased and Retired During Period, Shares	1,160,000	824,000	(3,025,000)
Common Stock, Shares, Outstanding, Ending Balance	747,492,000		747,492,000
Corteva [Member] | Shares of Corteva Stock [Member]
Class of Stock [Line Items]
Exchange Ratio									1
Corteva [Member] | Shares of DowDuPont Common Stock Held [Member]
Class of Stock [Line Items]
Exchange Ratio									3
[1]	The cash flows for the nine months ended September 30, 2019 includes cash flows of EID's ECP and Specialty Products Entities.

Stockholders' Equity Noncontrol

Stockholders' Equity Noncontrolling interests (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	[1]
Noncontrolling Interest [Line Items]
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners	46.50%
Payments for acquisition of subsidiary's interest from the non-controlling Interests	$ 60	$ 0
[1]	The cash flows for the nine months ended September 30, 2019 includes cash flows of EID's ECP and Specialty Products Entities.

Stockholders' Equity Preferred

Stockholders' Equity Preferred Stock (Details) - EID [Member] - USD ($)	9 Months Ended
	Sep. 30, 2020	Dec. 31, 2019	Sep. 30, 2019
$4.50 Series Preferred Stock [Member]
Class of Stock [Line Items]
Preferred Stock, Shares Authorized	23,000,000	23,000,000	23,000,000
Preferred Stock, Shares Issued	1,673,000	1,673,000	1,673,000
Preferred Stock, Redemption Amount	$ 120	$ 120	$ 120
$3.50 Series Preferred Stock [Member]
Class of Stock [Line Items]
Preferred Stock, Shares Authorized	23,000,000	23,000,000	23,000,000
Preferred Stock, Shares Issued	700,000	700,000	700,000
Preferred Stock, Redemption Amount	$ 102	$ 102	$ 102
Corteva [Member]
Class of Stock [Line Items]
Ownership interest in an entity	100.00%

Stockholders' Equity Other Comp

Stockholders' Equity Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions		3 Months Ended						9 Months Ended
		Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019	Dec. 31, 2018
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance		$ 24,801	$ 24,079	$ 24,555	$ 26,067	$ 75,074	$ 75,153	$ 24,555	$ 75,153
Amounts Reclassified from Accumulated Other Comprehensive Loss		(17)			3			12	15
Other comprehensive (loss) income		49	88	(663)	(292)	(155)	(74)	(526)	(521)
Impact of Internal Reorganizations						(55,496)
Ending Balance		24,346	24,801	24,079	25,261	26,067	75,074	24,346	25,261
Accumulated Other Comprehensive Income (Loss), Net of Tax		(3,796)			(2,667)			(3,796)	(2,667)	$ (3,270)
Pension Plan
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other Comprehensive (Loss) Income, before Reclassifications, Net of Tax								(10)	9
Amounts Reclassified from Accumulated Other Comprehensive Loss								4	4
Other comprehensive (loss) income								(6)	13
Accumulated Other Comprehensive Income (Loss), Net of Tax		(1,253)			(516)			(1,253)	(516)	(1,247)	$ (620)
Other Benefit Plans
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other Comprehensive (Loss) Income, before Reclassifications, Net of Tax								2	(85)
Amounts Reclassified from Accumulated Other Comprehensive Loss								1	(1)
Other comprehensive (loss) income								3	(86)
Accumulated Other Comprehensive Income (Loss), Net of Tax		(78)			(7)			(78)	(7)	(81)	79
Cumulative Translation Adjustment
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other Comprehensive (Loss) Income, before Reclassifications, Net of Tax	[1]							(507)	(471)
Amounts Reclassified from Accumulated Other Comprehensive Loss								0	0
Other comprehensive (loss) income								(507)	(471)
Accumulated Other Comprehensive Income (Loss), Net of Tax		(2,451)			(2,141)			(2,451)	(2,141)	(1,944)	(2,793)
Derivative Instruments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other Comprehensive (Loss) Income, before Reclassifications, Net of Tax								(23)	11
Amounts Reclassified from Accumulated Other Comprehensive Loss		(19)			1			7	12
Other comprehensive (loss) income								(16)	23
Accumulated Other Comprehensive Income (Loss), Net of Tax		(14)			(3)			(14)	(3)	2	(26)
Total
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance		(3,845)	(3,933)	(3,270)	(2,375)	(3,434)	(3,360)	(3,270)	(3,360)
Other Comprehensive (Loss) Income, before Reclassifications, Net of Tax								(538)	(536)
Amounts Reclassified from Accumulated Other Comprehensive Loss								12	15
Other comprehensive (loss) income		49	88	(663)	(292)	(155)	(74)	(526)	(521)
Impact of Internal Reorganizations						1,214
Ending Balance		(3,796)	$ (3,845)	$ (3,933)	(2,667)	$ (2,375)	$ (3,434)	(3,796)	(2,667)
Accumulated Other Comprehensive Income (Loss), Net of Tax		$ (3,796)			$ (2,667)			$ (3,796)	(2,667)	$ (3,270)	$ (3,360)
Internal Reorganization [Member] | Pension Plan
Accumulated Other Comprehensive Income (Loss) [Line Items]
Impact of Internal Reorganizations									91
Internal Reorganization [Member] | Other Benefit Plans
Accumulated Other Comprehensive Income (Loss) [Line Items]
Impact of Internal Reorganizations									0
Internal Reorganization [Member] | Cumulative Translation Adjustment
Accumulated Other Comprehensive Income (Loss) [Line Items]
Impact of Internal Reorganizations									1,123
Internal Reorganization [Member] | Derivative Instruments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Impact of Internal Reorganizations									0
Internal Reorganization [Member] | Total
Accumulated Other Comprehensive Income (Loss) [Line Items]
Impact of Internal Reorganizations									$ 1,214
[1]	The cumulative translation adjustment loss for the nine months ended September 30, 2019 was primarily driven by the strengthening of the USD against the Brazilian Real (“BRL”), the European Euro (“EUR”) and the South African Rand (“ZAR”). The cumulative translation adjustment loss for the nine months ended September 30, 2020 was primarily driven by strengthening of the USD against the Brazilian Real ("BRL") and the South African Rand ("ZAR").

Stockholders' Equity Tax Benefi

Stockholders' Equity Tax Benefit (Expense) on Net Activity (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other Comprehensive Income (Loss), Tax Benefit (Expense)	$ 4	$ 1	$ 3	$ 27
Pension Plan
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other Comprehensive Income (Loss), Tax Benefit (Expense)	0	0	(3)	4
Other Benefit Plans
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other Comprehensive Income (Loss), Tax Benefit (Expense)	0	0	0	29
Derivative Instruments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other Comprehensive Income (Loss), Tax Benefit (Expense)	$ 4	$ 1	$ 6	$ (6)

Stockholders' Equity Reclassifi

Stockholders' Equity Reclassifications out of AOCI (Details) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Amounts Reclassified from Accumulated Other Comprehensive Loss		$ (17)	$ 3	$ 12	$ 15
Pension Plan
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Amounts Reclassified from Accumulated Other Comprehensive Loss				4	4
Other Benefit Plans
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Amounts Reclassified from Accumulated Other Comprehensive Loss				1	(1)
Derivative Instruments
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Reclassification from Accumulated Other Comprehensive Income (Loss), Current Period, before Tax	[1]	(22)	1	13	13
Reclassification from Accumulated Other Comprehensive Loss, Current Period, Tax	[2]	3	0	(6)	(1)
Amounts Reclassified from Accumulated Other Comprehensive Loss		(19)	1	7	12
Prior Service Benefit | Pension Plan
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Reclassification from Accumulated Other Comprehensive Income (Loss), Current Period, before Tax	[3]	0	0	(1)	0
Actuarial (Gains) Losses | Pension Plan
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Reclassification from Accumulated Other Comprehensive Income (Loss), Current Period, before Tax	[3]	1	1	3	2
Actuarial (Gains) Losses | Other Benefit Plans
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Reclassification from Accumulated Other Comprehensive Income (Loss), Current Period, before Tax	[3]	1	0	1	(1)
Settlement Loss | Pension Plan
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Reclassification from Accumulated Other Comprehensive Income (Loss), Current Period, before Tax	[3]	0	1	3	2
Accumulated Defined Benefit Plans Adjustment Attributable to Parent | Pension Plan
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Reclassification from Accumulated Other Comprehensive Income (Loss), Current Period, before Tax		1	2	5	4
Reclassification from Accumulated Other Comprehensive Loss, Current Period, Tax	[2]	0	0	(1)	0
Amounts Reclassified from Accumulated Other Comprehensive Loss		1	2	4	4
Accumulated Defined Benefit Plans Adjustment Attributable to Parent | Other Benefit Plans
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Reclassification from Accumulated Other Comprehensive Income (Loss), Current Period, before Tax		1	0	1	(1)
Reclassification from Accumulated Other Comprehensive Loss, Current Period, Tax	[2]	0	0	0	0
Amounts Reclassified from Accumulated Other Comprehensive Loss		$ 1	$ 0	$ 1	$ (1)
[1]	Reflected in cost of goods sold.
[2]	Reflected in provision for (benefit from) income taxes from continuing operations.
[3]	These accumulated other comprehensive (loss) income components are included in the computation of net periodic benefit (credit) cost of the company's pension and other benefit plans. See Note 16 - Pension Plans and Other Post Employment Benefits, for additional information.

Pension Plans and Other Post _3

Pension Plans and Other Post Employment Benefit Plans Components of net periodic benefit cost (credit) (Details) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Jun. 01, 2019	May 31, 2019	Dec. 31, 2018
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Funded (Unfunded) Status of Plan						$ 5,800
Restricted Cash						$ 319
Discount Rate							3.64%	4.23%
Defined Benefit Plan Remeasurement Impact Underfunded Status			$ 114		$ 114
Pension Plan
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Service Cost		$ 6	5	$ 19	37
Interest Cost		139	185	420	592
Expected return on plan assets		(250)	(253)	(750)	(839)
Amortization of unrecognized loss (gain)		1	0	3	2
Amortization of Prior Service Benefit		0	0	(1)	0
Settlement/Curtailment Loss (Gain)		0	1	3	0
Defined Benefit Plan, Net Periodic Benefit (Credit) Cost		(104)	(62)	(306)	(208)
Other Benefit Plans
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Service Cost		0	0	1	3
Interest Cost		16	20	49	65
Amortization of unrecognized loss (gain)		1	0	1	(1)
Discontinued Operations [Member] | Pension Plan
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Net Periodic Benefit (Credit) Cost	[1]	0	0	0	(17)
Discontinued Operation, Gain (Loss) on Disposal of Discontinued Operation, Net of Tax					(37)
Continuing Operations [Member] | Pension Plan
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Net Periodic Benefit (Credit) Cost		(104)	(62)	(306)	(191)
Continuing Operations [Member] | Other Benefit Plans
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Net Periodic Benefit (Credit) Cost		$ 17	$ 20	$ 51	$ 67
[1]	Includes non-service related components of net periodic benefit credit of $(37) million for the nine months ended September 30, 2019.

Financial Instruments Financial

Financial Instruments Financial Instruments (Narrative) (Details) - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019	Sep. 30, 2019
Cash Equivalents [Member]
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-maturity	$ 1,986	$ 1,293	$ 1,568
Marketable Securities [Member]
Schedule of Held-to-maturity Securities [Line Items]
Debt Securities, Held-to-maturity	$ 152	$ 5	$ 117

Financial Instruments Notional

Financial Instruments Notional Amounts (Details) - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019	Sep. 30, 2019
Designated as Hedging Instrument [Member] | Foreign Currency Contract [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Notional Amount	$ 770	$ 0	$ 0
Designated as Hedging Instrument [Member] | Commodity Contract [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Notional Amount	51	570	73
Not Designated as Hedging Instrument [Member] | Foreign Currency Contract [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Notional Amount	$ 924	$ 582	$ 1,313

Financial Instruments Cash Flow

Financial Instruments Cash Flow Hedges Included in AOCI (Details) € in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020USD ($)	Sep. 30, 2019USD ($)	Sep. 30, 2020USD ($)	Sep. 30, 2019USD ($)	Sep. 30, 2020EUR (€)	Dec. 31, 2019USD ($)
Designated as Hedging Instrument [Member] | Commodity Contract [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Remaining Maturity			2 years
Beginning Balance	$ (16)	$ (3)	$ 2	$ (26)
Additions and revaluations of derivatives designated as cash flow hedges	10	(1)	(34)	11
Clearance of hedge results to earnings	(2)	1	24	12
Ending Balance	(8)	(3)	(8)	(3)
After-tax net (loss) gain to be reclassified from AOCL into earnings over the next twelve months			(9)
Derivative, Notional Amount	51	73	$ 51	73		$ 570
Designated as Hedging Instrument [Member] | Foreign Currency Contract [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Remaining Maturity			2 years
Beginning Balance	19		$ 0
Additions and revaluations of derivatives designated as cash flow hedges	4		23
Clearance of hedge results to earnings	(17)		(17)
Ending Balance	6		6
After-tax net (loss) gain to be reclassified from AOCL into earnings over the next twelve months			6
Derivative, Notional Amount	$ 770	$ 0	$ 770	$ 0		$ 0
Net Investment Hedging [Member] | Foreign Currency Contract [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Notional Amount | €					€ 450

Financial Instruments Fair Valu

Financial Instruments Fair Value of Derivatives (Details) - USD ($) $ in Millions		Sep. 30, 2020	Dec. 31, 2019	Sep. 30, 2019
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Asset, Gross		$ 126	$ 25	$ 74
Derivative Asset, Counterparty and Cash Collateral Netting	[1]	(75)	(18)	(6)
Derivative Asset, Net		51	7	68
Derivative Liability, Gross		97	43	20
Derivative Liability, Counterparty and Cash Collateral Netting	[1]	(69)	(16)	7
Derivative Liability, Net		28	27	27
Designated as Hedging Instrument [Member] | Foreign Currency Contract [Member] | Other Current Assets [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Asset, Gross		24
Derivative Asset, Counterparty and Cash Collateral Netting	[1]	0
Derivative Asset, Net		24
Designated as Hedging Instrument [Member] | Foreign Currency Contract [Member] | Accrued and Other Current Liabilities [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Asset, Gross		12
Derivative Asset, Counterparty and Cash Collateral Netting		0
Derivative Asset, Net		12
Not Designated as Hedging Instrument [Member] | Foreign Currency Contract [Member] | Other Current Assets [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Asset, Gross		101	25	74
Derivative Asset, Counterparty and Cash Collateral Netting	[1]	(75)	(18)	(6)
Derivative Asset, Net		26	7	68
Not Designated as Hedging Instrument [Member] | Foreign Currency Contract [Member] | Accrued and Other Current Liabilities [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Liability, Gross		84	43	20
Derivative Liability, Counterparty and Cash Collateral Netting	[1]	(69)	(16)	7
Derivative Liability, Net		15	$ 27	$ 27
Not Designated as Hedging Instrument [Member] | Commodity Contract [Member] | Other Current Assets [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Asset, Gross		1
Derivative Asset, Counterparty and Cash Collateral Netting	[1]	0
Derivative Asset, Net		1
Not Designated as Hedging Instrument [Member] | Commodity Contract [Member] | Accrued and Other Current Liabilities [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Liability, Gross		1
Derivative Liability, Counterparty and Cash Collateral Netting	[1]	0
Derivative Liability, Net		$ 1
[1]	Counterparty and cash collateral amounts represent the estimated net settlement amount when applying netting and set-off rights included in master netting arrangements between the company and its counterparties and the payable or receivable for cash collateral held or placed with the same counterparty.

Financial Instruments Effect of

Financial Instruments Effect of Derivative Instruments (Details) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Derivative Instruments, Gain (Loss) [Line Items]
Amount of (loss) gain recognized in OCI	[1]	$ (2)	$ (2)	$ (35)	$ 16
Gain (Loss) on Derivative Instruments, Net, Pretax	[2]	19	55	188	(15)
Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of (loss) gain recognized in OCI	[1]	(2)	(2)	(35)	16
Amount of gain (loss) recognized in Income - Pre-tax	[2]	22	(1)	(13)	(13)
Designated as Hedging Instrument [Member] | Foreign Currency Contract [Member] | Cost of Goods Sold
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain (loss) recognized in income - pre-tax	[2],[3]	19	0	19	0
Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Foreign Currency Contract [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of (loss) gain recognized in OCI	[1]	4	0	27	0
Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Commodity Contract [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of (loss) gain recognized in OCI	[1]	14	(2)	(46)	16
Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Commodity Contract [Member] | Cost of Goods Sold
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain (loss) recognized in Income - Pre-tax	[2],[3]	3	(1)	(32)	(13)
Designated as Hedging Instrument [Member] | Net Investment Hedging [Member] | Foreign Currency Contract [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of (loss) gain recognized in OCI	[1]	(20)	0	(16)	0
Not Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain (loss) recognized in income - pre-tax	[2]	(3)	56	201	(2)
Not Designated as Hedging Instrument [Member] | Foreign Currency Contract [Member] | Cost of Goods Sold
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain (loss) recognized in income - pre-tax	[2],[3]	3	0	19	0
Not Designated as Hedging Instrument [Member] | Foreign Currency Contract [Member] | Other Income - net
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain (loss) recognized in income - pre-tax	[2],[4]	(6)	55	173	(11)
Not Designated as Hedging Instrument [Member] | Commodity Contract [Member] | Cost of Goods Sold
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain (loss) recognized in income - pre-tax	[2],[3]	$ 0	$ 1	$ 9	$ 9
[1]	OCI is defined as other comprehensive income (loss).
[2]	For cash flow hedges, this represents the portion of the gain (loss) reclassified from accumulated OCI into income during the period.
[3]	Recorded in cost of goods sold.
[4]	Loss recognized in other income - net was partially offset by the related loss on the foreign currency-denominated monetary assets and liabilities of the company's operations. See Note 7 - Supplementary Information, for additional information.

Fair Value Measurements (Detail

Fair Value Measurements (Details) - USD ($) $ in Millions		3 Months Ended
		Sep. 30, 2019	Sep. 30, 2020	Dec. 31, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset		$ 74	$ 126	$ 25
Derivative Liability		20	97	43
Technology-Based Intangible Assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Finite-Lived Intangible Assets, Gross		0
Other Intangible Assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Finite-Lived Intangible Assets, Gross		0
In Process Research and Development [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset Impairment Charges		(47)
Indefinite-lived Intangible Assets (Excluding Goodwill)		0
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash, cash equivalents and restricted cash equivalents, fair value disclosure	[1]	1,568	1,986	1,293
Assets at Fair Value		1,759	2,264	1,323
Liabilities at Fair Value		20	97	43
Marketable Securities		117	152	5
Foreign Currency Contract [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset	[2]	74	125	25
Derivative Liability	[2]	20	96	$ 43
Commodity Contract [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset			1
Derivative Liability			$ 1
Technology-Based Intangible Assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset Impairment Charges		(1)
Other Intangible Assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset Impairment Charges		$ (6)
[1]	Time deposits included in cash and cash equivalents and money market funds included in other current assets in the interim Condensed Consolidated Balance Sheets are held at amortized cost, which approximates fair value.
[2]	See Note 17 - Financial Instruments for the classification of derivatives in the interim Condensed Consolidated Balance Sheets.

Segment Reporting Segment Infor

Segment Reporting Segment Information (Details) - USD ($) $ in Millions	3 Months Ended								9 Months Ended
	Sep. 30, 2020		Jun. 30, 2020	Mar. 31, 2020	Sep. 30, 2019		Jun. 30, 2019	Mar. 31, 2019	Sep. 30, 2020		Sep. 30, 2019		Dec. 31, 2019
Segment Reporting Information [Line Items]
Net Sales	$ 1,863				$ 1,911				$ 11,010		$ 10,863
Segment operating EBITDA	(152)				(176)				1,932		1,855	[1]
Segment Assets	36,965				39,352				36,965		39,352		$ 38,879
Share-based compensation	15		$ 19	$ 2	12		$ 55	$ 18
Additional Paid-in Capital [Member]
Segment Reporting Information [Line Items]
Share-based compensation	16		$ 19	$ 2	12		$ 11
Seed [Member]
Segment Reporting Information [Line Items]
Net Sales	523				681				6,516		6,347
Segment operating EBITDA	(282)				(295)				1,255		1,066
Segment Assets	24,372	[2]			26,021	[2]			24,372	[2]	26,021	[2]	25,387
Crop Protection [Member]
Segment Reporting Information [Line Items]
Net Sales	1,340				1,230				4,494		4,516
Segment operating EBITDA	130				119				677		789
Segment Assets	$ 12,593	[2]			$ 13,331	[2]			$ 12,593	[2]	$ 13,331	[2]	$ 13,492
[1]	The nine months ended September 30, 2019 is presented on a pro forma basis, prepared in accordance with Article 11 of Regulation S-X.
[2]	Segment assets at December 31, 2019 were $25,387 million and $13,492 million for Seed and Crop Protection, respectively.

Segment Reporting Segment Recon

Segment Reporting Segment Reconciliation (Details) - USD ($) $ in Millions		3 Months Ended			9 Months Ended
		Sep. 30, 2020	Sep. 30, 2019		Sep. 30, 2020	Sep. 30, 2019
Segment Reporting Information [Line Items]
Income (loss) from continuing operations after income taxes		$ (390)	$ (527)		$ 657	$ (228)
(Benefit from) provision for income taxes on continuing operations		(117)	(104)		88	99
(Loss) income from continuing operations before income taxes		(507)	(631)		745	(129)
Interest income		11	13		38	46
Interest Expense		11	19		35	112
Exchange (gains) losses - net	[1]	(67)	(11)		(127)	(70)
Non-operating pension and other post employment benefit credit	[2]	93	47		275	144
Significant Items		49	246		351	886
Pro forma adjustments						298
Corporate Expenses		27	31		81	92
Segment operating EBITDA		(152)	(176)		1,932	1,855	[3]
Segment Reconciling Items [Member]
Segment Reporting Information [Line Items]
Depreciation and Amortization		285	226		868	711
Interest income		(11)	(13)		(38)	(46)
Exchange (gains) losses - net		67	(22)	[4]	127	37	[4]
Non-operating pension and other post employment benefit credit		(73)	(32)		(237)	(106)
Significant Items		$ (49)	$ (246)		$ (351)	$ (886)
[1]	Includes net pre-tax exchange losses of $(26) million and $(56) million for the three and nine months ended September 30, 2020, respectively, and $(33) million and $(42) million for the three and nine months ended September 30, 2019, respectively, associated with the devaluation of the Argentine peso.
[2]	Includes non-service related components of net periodic benefit credits (costs) (interest cost, expected return on plan assets, amortization of unrecognized (gain) loss, amortization of prior service benefit and settlement (loss) gain).
[3]	The nine months ended September 30, 2019 is presented on a pro forma basis, prepared in accordance with Article 11 of Regulation S-X.
[4]	Excludes a $(33) million foreign exchange loss for the three and nine months ended September 30, 2019 associated with the devaluation of the Argentine peso, as it is included within significant items. See Note 7 - Supplementary Information for additional information

Segment Reporting Segment Asset

Segment Reporting Segment Asset Reconciliation (Details) - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019	Sep. 30, 2019
Segment Reporting [Abstract]
Segment Assets	$ 36,965	$ 38,879	$ 39,352
Corporate Assets	4,725	3,518	3,883
Total Assets	$ 41,690	$ 42,397	$ 43,235

Segment Reporting Significant I

Segment Reporting Significant Items (Details) - USD ($) $ in Millions		3 Months Ended			9 Months Ended
		Sep. 30, 2020	Sep. 30, 2019		Sep. 30, 2020	Sep. 30, 2019
Segment Reporting Information [Line Items]
Restructuring and Asset related charges, net		$ 49	$ 46		$ 298	$ 167
Integration and Separation Costs		0	152		0	694
Loss on Extinguishment of Debt		0	0		0	(13)	[1]
Significant Items		49	246		351	886
Net exchange gains (losses)	[2]	(67)	(11)		(127)	(70)
Hedging Program [Member]
Segment Reporting Information [Line Items]
Net exchange gains (losses)		(6)	55		173	(11)
Argentine Peso Devaluation [Member] | Hedging Program [Member]
Segment Reporting Information [Line Items]
Net exchange gains (losses)		(26)	(33)		(56)	(42)
Corporate | Argentine Peso Devaluation [Member] | Hedging Program [Member]
Segment Reporting Information [Line Items]
Net exchange gains (losses)						33
Segment Reconciling Items [Member]
Segment Reporting Information [Line Items]
Restructuring and Asset related charges, net	[3]	(49)	(46)		(298)	(167)	[4]
Integration and Separation Costs	[5]		(152)			(582)	[4]
Loss on Divestiture	[4],[6]					(24)
Amortization of inventory step up included in COGS	[7]		(15)			(67)	[4]
Loss on Extinguishment of Debt	[4],[8]					(13)
Significant Items		(49)	(246)		(351)	(886)
Net exchange gains (losses)		67	(22)	[9]	127	37	[9]
Argentine peso devaluation	[10]		(33)			(33)	[4]
Segment Reconciling Items [Member] | La Porte [Member]
Segment Reporting Information [Line Items]
Loss on Divestiture	[11]				(53)
Segment Reconciling Items [Member] | Seed [Member]
Segment Reporting Information [Line Items]
Restructuring and Asset related charges, net	[3]	(9)	(47)		(154)	(123)	[4]
Integration and Separation Costs			0			0
Amortization of inventory step up included in COGS	[7]		(15)			(67)	[4]
Significant Items		(9)	(62)		(154)	(214)
Argentine peso devaluation						0
Segment Reconciling Items [Member] | Seed [Member] | La Porte [Member]
Segment Reporting Information [Line Items]
Loss on Divestiture					0
Segment Reconciling Items [Member] | Seed [Member] | Sale of JV [Member]
Segment Reporting Information [Line Items]
Loss on Divestiture	[4],[6]					(24)
Segment Reconciling Items [Member] | Crop Protection [Member]
Segment Reporting Information [Line Items]
Restructuring and Asset related charges, net	[3]	(40)	1		(98)	(24)	[4]
Integration and Separation Costs			0			0
Loss on Divestiture					(53)
Amortization of inventory step up included in COGS						0
Significant Items		(40)	1		(151)	(24)
Argentine peso devaluation						0
Segment Reconciling Items [Member] | Crop Protection [Member] | La Porte [Member]
Segment Reporting Information [Line Items]
Loss on Divestiture	[11]				(53)
Segment Reconciling Items [Member] | Crop Protection [Member] | Sale of JV [Member]
Segment Reporting Information [Line Items]
Loss on Divestiture						0
Segment Reconciling Items [Member] | Corporate
Segment Reporting Information [Line Items]
Restructuring and Asset related charges, net	[3]	0	0		(46)	(20)	[4]
Integration and Separation Costs	[5]		(152)			(582)	[4]
Amortization of inventory step up included in COGS						0
Loss on Extinguishment of Debt	[4],[8]					(13)
Significant Items		$ 0	(185)		(46)	(648)
Argentine peso devaluation	[10]		$ (33)			(33)	[4]
Segment Reconciling Items [Member] | Corporate | La Porte [Member]
Segment Reporting Information [Line Items]
Loss on Divestiture					$ 0
Segment Reconciling Items [Member] | Corporate | Sale of JV [Member]
Segment Reporting Information [Line Items]
Loss on Divestiture						$ 0
[1]	The cash flows for the nine months ended September 30, 2019 includes cash flows of EID's ECP and Specialty Products Entities.
[2]	Includes net pre-tax exchange losses of $(26) million and $(56) million for the three and nine months ended September 30, 2020, respectively, and $(33) million and $(42) million for the three and nine months ended September 30, 2019, respectively, associated with the devaluation of the Argentine peso.
[3]	Includes Board approved restructuring plans and asset related charges as well as accelerated prepaid amortization expense. See Note 5 - Restructuring and Asset Related Charges - Net, for additional information.
[4]	The nine months ended September 30, 2019 is presented on a pro forma basis, prepared in accordance with Article 11 of Regulation S-X.
[5]	Integration and separation costs include costs incurred to prepare for and close the Merger, post-Merger integration expenses, and costs incurred to prepare for the Internal Reorganizations.
[6]	Includes a loss recorded in other income - net related to DAS’s sale of a joint venture related to synergy actions.
[7]	Includes a charge related to the amortization of the inventory that was stepped up to fair value in connection with the Merger.
[8]	Includes a loss on early extinguishment of debt related to the difference between the redemption price and the par value of the Make Whole Notes and Term Loan Facility, partially offset by the write-off of unamortized step-up related to the fair value step-up of EID's debt.
[9]	Excludes a $(33) million foreign exchange loss for the three and nine months ended September 30, 2019 associated with the devaluation of the Argentine peso, as it is included within significant items. See Note 7 - Supplementary Information for additional information
[10]	Includes a charge included in other income (expense) - net associated with remeasuring the company’s Argentine Peso net monetary assets, resulting from an unexpected August primary election result in Argentina. Throughout the three months ended September 30, 2019, the Argentine Peso dropped approximately a third of its value against the US dollar and in September of 2019, the country’s central bank announced new restrictions on foreign currency transactions.
[11]	Includes a loss recorded in other income - net related to the expected sale of the La Porte site.

EID - Basis of Presentation Nar

EID - Basis of Presentation Narrative (Details) - $ / shares	9 Months Ended
	Sep. 30, 2020	Oct. 29, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 26, 2019	Jun. 01, 2019
EID [Member]
Common Stock, Shares, Outstanding	200		200	200
Common Stock, Par Value	$ 0.30	$ 0.30	$ 0.30	$ 0.30
Common Stock, Shares, Outstanding	747,492,000		748,577,000	748,390,000
Common Stock, Par Value	$ 0.01	$ 0.01	$ 0.01	$ 0.01
Corteva [Member] | EID [Member]
Ownership interest in an entity	100.00%
Corteva [Member]
Common Stock, Shares, Outstanding	747,492,000		748,577,000
Common Stock, Par Value	$ 0.01				$ 0.01	$ 0.01

EID - Related Party Transacti_2

EID - Related Party Transactions (Details) - EID [Member] - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Related Party Transaction [Line Items]
Long Term Debt - Related Party	$ 3,712	$ 4,037	$ 3,712	$ 4,037	$ 4,021
Corteva [Member]
Related Party Transaction [Line Items]
Debt, Weighted Average Interest Rate	1.80%	3.68%	1.80%	3.68%	3.27%
Interest Expense, Related Party	$ 19	$ 39	$ 82	$ 69
Corteva [Member] | Accrued and Other Current Liabilities [Member]
Related Party Transaction [Line Items]
Indemnified Liabilities	110	102	110	102	$ 119
Corteva [Member] | Other noncurrent obligations
Related Party Transaction [Line Items]
Indemnified Liabilities	$ 84	$ 180	$ 84	$ 180	$ 154

EID Segment FN Segment reconcil

EID Segment FN Segment reconciliation (Details) - USD ($) $ in Millions		3 Months Ended			9 Months Ended
		Sep. 30, 2020	Sep. 30, 2019		Sep. 30, 2020	Sep. 30, 2019
Segment Reporting Information [Line Items]
(Benefit from) provision for income taxes on continuing operations		$ (117)	$ (104)		$ 88	$ 99
(Loss) income from continuing operations before income taxes		(507)	(631)		745	(129)
Interest income		11	13		38	46
Interest Expense		11	19		35	112
Exchange (gains) losses - net	[1]	(67)	(11)		(127)	(70)
Significant Items		49	246		351	886
Pro forma adjustments						298
Corporate Expenses		27	31		81	92
Segment operating EBITDA		(152)	(176)		1,932	1,855	[2]
Integration and Separation Costs		0	152		0	694
EID [Member]
Segment Reporting Information [Line Items]
Income from Continuing Operations After Taxes		(404)	(557)		595	(281)
(Benefit from) provision for income taxes on continuing operations		(122)	(113)		68	83
(Loss) income from continuing operations before income taxes		(526)	(670)		663	(198)
Depreciation and Amortization		285	226		868	711
Interest Expense		30	58		117	181
Non-operating benefits - net		(73)	(32)		(237)	(106)
Significant Items		49	246		351	886
Pro forma adjustments						298
Corporate Expenses		27	31		81	92
Segment operating EBITDA		(152)	(176)		1,932	1,855	[3]
Integration and Separation Costs		0	152		0	694
Segment Reconciling Items [Member]
Segment Reporting Information [Line Items]
Depreciation and Amortization		285	226		868	711
Interest income		(11)	(13)		(38)	(46)
Exchange (gains) losses - net		67	(22)	[4]	127	37	[4]
Significant Items		(49)	(246)		(351)	(886)
Integration and Separation Costs	[5]		(152)			(582)	[6]
Segment Reconciling Items [Member] | EID [Member]
Segment Reporting Information [Line Items]
Interest income		(11)	(13)		(38)	(46)
Exchange (gains) losses - net		67	(22)	[7]	127	37	[7]
Hedging Program [Member]
Segment Reporting Information [Line Items]
Exchange (gains) losses - net		(6)	55		173	(11)
Hedging Program [Member] | Argentine Peso Devaluation [Member]
Segment Reporting Information [Line Items]
Exchange (gains) losses - net		(26)	(33)		(56)	(42)
Corporate | Segment Reconciling Items [Member]
Segment Reporting Information [Line Items]
Significant Items		0	(185)		(46)	(648)
Integration and Separation Costs	[5]		(152)			(582)	[6]
Corporate | Hedging Program [Member] | Argentine Peso Devaluation [Member]
Segment Reporting Information [Line Items]
Exchange (gains) losses - net						33
Corporate | Hedging Program [Member] | Argentine Peso Devaluation [Member] | EID [Member]
Segment Reporting Information [Line Items]
Exchange (gains) losses - net			(33)
Crop Protection [Member]
Segment Reporting Information [Line Items]
Segment operating EBITDA		130	119		677	789
Crop Protection [Member] | Segment Reconciling Items [Member]
Segment Reporting Information [Line Items]
Significant Items		$ (40)	1		$ (151)	(24)
Integration and Separation Costs			$ 0			$ 0
[1]	Includes net pre-tax exchange losses of $(26) million and $(56) million for the three and nine months ended September 30, 2020, respectively, and $(33) million and $(42) million for the three and nine months ended September 30, 2019, respectively, associated with the devaluation of the Argentine peso.
[2]	The nine months ended September 30, 2019 is presented on a pro forma basis, prepared in accordance with Article 11 of Regulation S-X.
[3]	The nine months ended September 30, 2019 is presented on a pro forma basis, prepared in accordance with Article 11 of Regulation S-X
[4]	Excludes a $(33) million foreign exchange loss for the three and nine months ended September 30, 2019 associated with the devaluation of the Argentine peso, as it is included within significant items. See Note 7 - Supplementary Information for additional information
[5]	Integration and separation costs include costs incurred to prepare for and close the Merger, post-Merger integration expenses, and costs incurred to prepare for the Internal Reorganizations.
[6]	The nine months ended September 30, 2019 is presented on a pro forma basis, prepared in accordance with Article 11 of Regulation S-X.
[7]	Excludes a $(33) million foreign exchange loss for the three and nine months ended September 30, 2019 associated with the devaluation of the Argentine peso. See Note 7 - Supplementary Information of the Corteva, Inc. interim Consolidated Financial Statements for additional information

EID Segment FN Segment Asset Re

EID Segment FN Segment Asset Reconciliation (Details) - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019	Sep. 30, 2019
EID [Member]
Segment Reporting Information [Line Items]
Segment Assets	$ 36,965	$ 38,879	$ 39,352
Corporate Assets	4,725	3,518	3,899
Total Assets	41,690	42,397	43,251
Segment Assets	36,965	38,879	39,352
Corporate Assets	4,725	3,518	3,883
Total Assets	$ 41,690	$ 42,397	$ 43,235